Raul and raymond are 4 and 5 years old, and the main benefit they get out of being "best" friends is

I believe the correct answer is: trust, support, and shared interests.

Children are developing relationships from early stages of childhood, primary with their mothers and family. Friendships that are similar to adult’s friendships are mostly developed after the age of three as before the age of three, children play beside one another, but not together. At the age of 5 (preoperational stage) children chose their friends based on mutual trust, support, and shared interests.