Answer :
Humans are at the top of the evolutionary ladder because they have the largest brains. (Is a false statement.)
The false statement is that Humans are at the top of the evolutionary ladder because they have the largest brains.
There are two reasons for this statement to be false.
First, There is no evolutionary ladder in practical study, it is a hypothetical thing so the humans cannot be at the top of this ladder because there is no ladder as such.
Second, Humans does not have largest brain, whales have the largest brain size. According to this fact also humans does not have the largest brain size.