The answer is the third sentence: "Finally take care to put away all your supplies and clean your workstation, so you are ready for your shift in the morning." because the word 'so' is a conjuction.
Answer: According to the speaker, headlines about the benefits of chocolate and cheese came about when the scientist was doing studies with a drink that made people have less tryptophan in the brain.
"To take care of all it's needs". If a large creature's needs can not be met, it will die. Therefore, this would be the answer to your question.
I think the answer is d.
Hope this helps!!