Answer:
d) simile
Step-by-step explanation:
a metaphor is comparing two things without using "like" or "as"- this sentence uses the word "as"
irony is when something happens that you do not expect and this doesn't apply to this sentence
personification is giving human characteristics to non-human objects however a crewman is a human
the answer is simile because the author is comparing two things (a crewman and a Turk) USING the word "as"