What does the structure of the word altruistic tell the reader about this meaning

Explanation:

The word altruistic comes from the word altruism and suffix - tic. The word altruism means  the principle and concern for other human's happiness. It is a selfless concern for the welfare of others. The term denotes a life attitude that includes selflessness, affection, love for another, and willingness to help another, at the cost of personal harm and sacrifice, without any compensation or outward reward. Altruism comes from the French word autrui, which means "other people".

The suffix -tic is used in adjectives of Greek origin, especially in the formation of adjectives from nouns.

The structure tells the reader that it is adverb that means helping and loving another human being. To be altruistic means to feel empathy for another and help and to love.  

correct answers:

c. they use panels.

d. they include images and words.

e. they contain gutters.