Which of these is the best definition of truism as used in this sentence

Truism stands for a certain kind of truth—a cliché, a platitude, something so self-evident that it is hardly worth mentioning. One can use it to accuse another writer or speaker of saying something so obvious or evident and trite that pointing it out is pointless. example

 The apple never falls far from the tree. A fool and his money are soon parted. A friend in need is a friend indeed.

yes, because if hes blind not deaf

impartial means: treating all rivals or disputants equally; fair and just.

i would say that impartial is agreeing with something, because impartial means to treat your rivals, arguments, and reasoning equally and fair. so if you rival says something, agreeing on it means you did the impartial.