对A选项不理解

NO.PZ2024010509000035问题如下 In responng to a request for proposal, a funmanager proposes selecting the least carbon-intensive of the acceptable investments in easector. The assets owner’s investment mante is most likely alignewith integrating ESG factors:A.a thresholrequirement.B.a basis for stewarhip engagement.C.applying a tilt to the portfolio’s exposures.C is correct. The approascribes a quantitative basis for austing or ‘tilting’ the exposures to more climate-sensitive ththey otherwise woulbe.这题为什么不选a啊啊？

NO.PZ2024010509000035问题如下In responng to a request for proposal, a funmanager proposes selecting the least carbon-intensive of the acceptable investments in easector. The assets owner’s investment mante is most likely alignewith integrating ESG factors:A.a thresholrequirement.B.a basis for stewarhip engagement.C.applying a tilt to the portfolio’s exposures.C is correct. The approascribes a quantitative basis for austing or ‘tilting’ the exposures to more climate-sensitive ththey otherwise woulbe.这题不是很理解，请说明

NO.PZ2024010509000035 问题如下 In responng to a request for proposal, a funmanager proposes selecting the least carbon-intensive of the acceptable investments in easector. The assets owner’s investment mante is most likely alignewith integrating ESG factors: A.a thresholrequirement. B.a basis for stewarhip engagement. C.applying a tilt to the portfolio’s exposures. C is correct. The approascribes a quantitative basis for austing or ‘tilting’ the exposures to more climate-sensitive ththey otherwise woulbe. 为什么不选A呢？