What's the qestion i can't fully see it
(A) Arrogance
The synonym of a word is a word with the same meaning. Effrontery means acting in a rude way, thus arrogance has the closest definition to effrontery and is the synonym.
Benevolent and Kindhearted are similar in meaning, kindhearted is typically defined as having a kind nature whereas benevolent is typically defined as being kindly.
