Question

(1) Some people pack their lunches in brown paper bags. (2) While others exercise their creativity and create bento boxes. (3) Bento boxes are traditional Japanese lunch boxes packed tightly with a variety of ingredients. (4) Traditional bentos are divided into 4 parts rice, 3 parts main dish (usually meat), 2 parts vegetables, and 1 part dessert. (5) The boxes have dividers to keep the food from touching. (6) They are covered securely to prevent leaking. (7) Insulated boxes can help keep warm food warm and cold food cold. (8) Although some foods need to be refrigerated or heated to kill germs that cause food poisoning. (9) Because bento boxes allow people to express their creativity, they are a great option to spice up the lunchtime routine.
6
Which of the following is the best way to combine sentences 5 and 6?
A.
The boxes have dividers to keep the food from touching, because they are covered securely to prevent leaking.
B.
The boxes have dividers to keep the food from touching they are covered securely to prevent leaking.
C.
The boxes have dividers to keep the food from touching, and they are covered securely to prevent leaking.
D.
The boxes have dividers to keep the food from touching and they are covered securely to prevent leaking.

Answer 1

C. The boxes have dividers to keep the food from touching, and they are covered securely to prevent leaking.

This correctly joins two independent clauses with the coordinating conjunction "and" and uses a comma before the conjunction.