一个选择题，帮忙选择，说明原因，谢谢！

来源：百度知道 编辑：UC知道 时间：2024/06/01 05:41:22
( )social dynamics and the competition over resources, Marx concluded that the people in power had interests to keep the system which put them at the top of the social pyramid going.
A Oberved B Having been observed C Observing D Being observed

C
observing social dynamics and the competition over resources为现在分词做状语从句

主语仍为马克思观察，因此排除被动的A/B/D

C
observe的逻辑主语是Marx，所以用主动，排除ABD
Marx是在观察到social dynamics and the competition over resources，才推断that the people in power had interests to keep the system which put them at the top of the social pyramid going的。