Answer:
A secondary source provides variety of expert perspectives and they are based on events during the second person point of view
Explanation:
The phrase "we had to annoy her by whizzing a pebble into her flowers" contains an onomatopoeia.
Since 'altruism' means 'feelings and behavior that show a desire to help other people and a lack of selfishness', and this word 'altruistic' ends with -ic, we can assume, based on its structure, that this is an adjective that is used to describe a person who behaves in such a way.
