这道题怎么判断是probability还是non probability呢

NO.PZ2021062201000012 问题如下 Perkiomen Kinzua seasoneautor, is auting last year's transactions for Conemaugh Corporation. Unfortunately, Conemaugh ha very large number of transactions last year, anKinzua is unr a time constraint to finish the aut. He cis to aut only the small subset of the transaction population this of interest anto use sampling to create thsubset.The most appropriate sampling methofor Kinzua to use is: A.jumentsampling B.systematic sampling. C.conveniensampling. A is correct. With jumentsampling, Kinzua will use his knowlee anprofessionjument a seasoneautor to seletransactions of interest from the population. This approawill allow Kinzua to create a sample this representative of the population anthwill provi sufficient aut coverage.Jumentsampling is useful in cases thhave a time constraint or in whithe specialty of researchers is criticto selea more representative sample thusing other probability or non-probability sampling metho. Juement sampling, however, entails the risk thKinzua is biasein his selections, leang to skeweresults thare not representative of the whole population.通过判断抽样，Kinzua 将利用他的知识去从总体中选择感兴趣的交易。 这种方法将使 Kinzua 能够创建一个代表总体的样本，并提供足够的审计覆盖范围。然而，判断抽样会导致 Kinzua 在他的选择中存在偏见的风险，导致结果无法代表总体。 为什么只aut一小部分就是jumental呀

NO.PZ2021062201000012 问题如下 Perkiomen Kinzua seasoneautor, is auting last year's transactions for Conemaugh Corporation. Unfortunately, Conemaugh ha very large number of transactions last year, anKinzua is unr a time constraint to finish the aut. He cis to aut only the small subset of the transaction population this of interest anto use sampling to create thsubset.The most appropriate sampling methofor Kinzua to use is: A.jumentsampling B.systematic sampling. C.conveniensampling. A is correct. With jumentsampling, Kinzua will use his knowlee anprofessionjument a seasoneautor to seletransactions of interest from the population. This approawill allow Kinzua to create a sample this representative of the population anthwill provi sufficient aut coverage.Jumentsampling is useful in cases thhave a time constraint or in whithe specialty of researchers is criticto selea more representative sample thusing other probability or non-probability sampling metho. Juement sampling, however, entails the risk thKinzua is biasein his selections, leang to skeweresults thare not representative of the whole population.通过判断抽样，Kinzua 将利用他的知识去从总体中选择感兴趣的交易。 这种方法将使 Kinzua 能够创建一个代表总体的样本，并提供足够的审计覆盖范围。然而，判断抽样会导致 Kinzua 在他的选择中存在偏见的风险，导致结果无法代表总体。 谢谢

NO.PZ2021062201000012问题如下 Perkiomen Kinzua seasoneautor, is auting last year's transactions for Conemaugh Corporation. Unfortunately, Conemaugh ha very large number of transactions last year, anKinzua is unr a time constraint to finish the aut. He cis to aut only the small subset of the transaction population this of interest anto use sampling to create thsubset.The most appropriate sampling methofor Kinzua to use is: A.jumentsamplingB.systematic sampling.C.conveniensampling. A is correct. With jumentsampling, Kinzua will use his knowlee anprofessionjument a seasoneautor to seletransactions of interest from the population. This approawill allow Kinzua to create a sample this representative of the population anthwill provi sufficient aut coverage.Jumentsampling is useful in cases thhave a time constraint or in whithe specialty of researchers is criticto selea more representative sample thusing other probability or non-probability sampling metho. Juement sampling, however, entails the risk thKinzua is biasein his selections, leang to skeweresults thare not representative of the whole population.通过判断抽样，Kinzua 将利用他的知识去从总体中选择感兴趣的交易。 这种方法将使 Kinzua 能够创建一个代表总体的样本，并提供足够的审计覆盖范围。然而，判断抽样会导致 Kinzua 在他的选择中存在偏见的风险，导致结果无法代表总体。 老师，我想问一下哈，这道题为什么不属于convenient的那种，因为我也在纠结juement和convential。