Answer: i didn't understand that sentence sorry, i will try my best to answer it if you type the question in comment section.
Explanation:
More effective than the other candidates, he would have been a great president when it came to negotiating with other countries. (if you talking about Bernie Sanders)
I am pretty sure that the answer is C but I am not 100% confident
Answer:
Sheila bought soap that was on sale at the farmer’s market.
Explanation:
Sheila bought soap that was on sale at the farmer’s market.
My educated guess would be that "in an old bus" is the object of the preposition.