Final answer:
The correct subordination option is 'Eve was not hurt in the crash because she was wearing her seatbelt.'
Step-by-step explanation:
The correct subordination option that joins the two sentences is:
Eve was not hurt in the crash because she was wearing her seatbelt.
In this sentence, the subordinating conjunction 'because' is used to join the two clauses. The main clause is 'Eve was not hurt in the crash' and the subordinate clause is 'she was wearing her seatbelt.'
By using 'because' as the subordination option, the sentence shows the cause-and-effect relationship between not being hurt in the crash and wearing a seatbelt.