D. Scientists were willing to do anything to further their pursuit of knowledge.
This is the best answer.
Hope this helps you.
P.s. I'd appreciate brainliest if u can please
Abstinence is the answer because it is basically saying absent
Illustrates the different levels of cellular organization<span> within a human ... </span>Cells<span> are the basic units of structure and function in the human </span>body<span>, as they are in all living .... </span>Explain<span> how form and function are related in human </span>cells<span>.</span>
He probably uses a metaphor because a simile uses the words like and as and a metaphor does not use the words like and as. Hope this helps!