Which of the following is a complete sentence?
a. because i had not slept for two nights.
b. even when the temperatures improved.
c. since she was hungry, she had a snack.
d. although henry was unusually tall.

C. Since she was hungry, she had a snack.

Explanation:

For a sentence to be deemed fully complete, there should be a meaningful story within that sentence. The start and ending should be in tandem with each other.

The four options provided shows various sentences but only option (C) is a full sentence.

Option (A) is just half of a sentence given. It gives a reason but not the final story.

Option (B) is also wrong as it is just a subordinate clause with no result or solution to the sentence.

Option (D) is also an incomplete sentence as like the other three options, it gives just half of the sentence and nothing more.

Option (C) gives the start and end of the sentence. She got hungry so she had a snack. Since she was hungry, she had a snack.

the answer is irony!

most likely the answer would be a.) cupidity

definitions:

cupidity - greed for money or possessions

hydrophobia - extreme or irrational fear of water, especially as a symptom of rabies in humans

pathology - the science of the causes and effects of diseases, especially the branch of medicine that deals with the laboratory examination of samples of body tissue for diagnostic or forensic

patho -   relating to disease