What is the correct way to call a function?

1.  get_max_num([57, 99, 31, 18])
2.  call.(get_max_num)
3.  def get_max_num([57, 99, 31, 18])
4.  call.get_max_num([57, 99, 31, 18])

Correct Answer:

•  get_max_num([57, 99, 31, 18])