When authors don’t want to offend the readers by using harsh word or phrase they can use a ?

Explanation:

Euphemisms are words that "sound good" in the sense that they are neither offensive nor unpleasant.

Thus, they  are used to prevent the audience from evoking unpleasant images, at least in a direct way.

They are frequently used when you are talking about some subjects that involve certain parts of the body or of the excretory system.

But, some times they are misused to bend the real true: many speaches from populist or dictators are full of euphemisms, which are aimed to twist the reality.

answer; /// i do believe the correct answer is (c) public education;

hello,

your answer is a) the metaphor suggests that the poetic themes are serious and dark.

collins is comparing the poem to a dark room. he is suggesting that the poems theme is serious and wants you to understand it. you don't need to understand the poet in order to understand the poem. you also don't need to move around while reading it. he is simply saying the poem has a dark and serious theme.

- i.a -