Which of the Following Is an Idea Generated and Supported

Which of the following is an idea generated and supported by evolutionary psychology?

A) Gender roles are socially constructed,as opposed to being a function of evolution.
B) The mind is like a general-purpose device that can be applied equally to a vast array of problems,because evolved psychological mechanisms are not domain-specific.
C) All evolved mechanisms are adaptive in contemporary society.
D) An extended childhood period evolved in humans because they require time to develop a large brain and learn the complexity of human societies.