Question

which activities according to feedback mechanism led to increase of the brain size of homo

Answer 1

meta analysis like miracle gro

Answer 2

The systematic way of communicating and the Language symbolic is the ultimate activity being recognized by the feedback mechanism that was involved in the process of increasing the size of the brain in the homo sapiens.

It has been seen that the release mechanism of some sort was also involved in this process where the size has seen to be increasing and leading to the solving of more complex cultures and bodies.