The type of verbal is participle and the verbal phrase is “playing the piano”
In the quoted statement above, the best answer that describes the statement is letter D. befitting a son or daughter. It is because the term filial, it means that it is pertaining to a son or daughter. So meaning, the sentence is pertaining to the son or daughter of the person who is states the sentence above.
A bystander but he also stood up for him so he is also considered someone who stood up for the victim