How do i get better at language arts

Which type of context clue would define the word chary in the sentence below? matt excitedly jumped into his dad's new pickup truck, while his mother was chary about getting in. a. synonym b. antonym c. cause and effect d. explanation [ plz me im a retared ]

So know lets geta real question what does this actually mean

Check if my essay is correct 15 points" i dont know much " my frist language is