HELP PLSSS What is the antecedent for the pronoun "they" in the following passage?

The bikes went through the hedges and the garage door, but they did not need many repairs.

A. The bikes
B. The hedges
C. The garage door and the hedges
D. The antecedent is unclear
P. S it's not C

The two essential parts of the sentence are the: a: subject n verb b: subject n noun c: adjective n verb

Match the definition to the word. 1. person or group opposing or hostile to another person or group propaganda 2. arranged in the order in which the events happened spatial 3. based upon reason; a rational approach to something logic 4. a method or system used to accomplish something adversary 5. having to do with space technique 6. coming one after another, in series, or in order chronological 7. the spreading of opinions or beliefs implied 8. suggested, indicated, or understood without express statement sequence

Which of these novels is considered an important precursor to science fiction