What was the cause of American leaders' initial refusal to enter World War I?

Answer 1

Are these your choices?

They wanted to maintain the country’s isolationist policy.
They were not certain the country had the resources to fight.
The United States did not wish to side with the British.
The United States had friendly relations with Germany.

I'll be glad to check your answer.

Answer 2

I put because they didn't wanna side with the Brits