Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
There is an important difference between humans and chimpanzees. Chimpanzees walk on four legs.
A. There is an important difference between humans and chimpanzees that walk on four legs.
B. Chimpanzees walk on four legs, so they are importantly different from humans.
C. An important difference between humans and chimpanzees is that chimpanzees walk on four legs.
D. There are important differences between humans and chimpanzees one of which is that chimpanzees walk on four legs.
Đáp án C