Which of the following correctly explains why scientists believe that great apes like chimpanzees and gorillas are more closely related to humans than monkeys on an evolutionary timeline?

Apes have smaller brains than monkeys and are less social than monkeys.

Monkeys have larger brains than apes and are smaller in size.

Monkeys are larger than apes and have prehensile tails.

Apes are larger than monkeys and have long legs and no tails.

I think its the first choice. Help please???

Question

Which of the following correctly explains why scientists believe that great apes like chimpanzees and gorillas are more closely related to humans than monkeys on an evolutionary timeline? 

Apes have smaller brains than monkeys and are less social than monkeys. 

 Monkeys have larger brains than apes and are smaller in size. 

 Monkeys are larger than apes and have prehensile tails. 

 Apes are larger than monkeys and have long legs and no tails. 

I think its the first choice. Help please???