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.
4
Sentence 9 in this passage is an example of a
A.
compound-complex sentence.
B.
complex sentence.
C.
simple sentence.
D.
compound sentence.

Answer 1

B. complex sentence.

It has one independent clause ("they are a great option to spice up the lunchtime routine") and one dependent (subordinate) clause beginning with "Because bento boxes allow people to express their creativity"), so it's a complex sentence.