a. is the most reasonable. if i'm wrong srry.
C. chapter 4. cars are built in factories, so they would use "robots in factories".
A) better at giving advice than taking it
Do not use contractions. Contractions are the words formed from two abbreviated words, such as "don't", "can't" and "won't".
Do not use colloquial vocabulary.
Avoid using run-on expressions.
Do not use rhetorical questions.
Place adverbs within the verb.
John Hansen was the first president