Answer: C. Going to the beach in the summer is one of my favorite vacations and so is going to the mountains in the fall.
The sentence presented above is corrected by omitting the "comma" after the conjunction "and" making it a grammatically correct sentence.
Answer:
1.a,2. b,3.a,4. c,5.a,6.c,7.a, 8.b,9.b,10.c,11.a ,12.c,13.a ,14.a ,15.c
It was a social structure.
