Is "the curb is a tightrope" a metaphor or an idiom. PLease explain for me, I need help. Thank you! AND NO LINKS

Read the excerpt from act iii of the importance of being earnest. jack. [in a pathetic voice.] miss prism, more is restored to you than this hand-bag. i was the baby you placed in it. miss prism. [amazed.] you? jack. [embracing her.] yes . . mother! miss prism. [recoiling in indignant astonishment.] mr. worthing! i am unmarried! jack. unmarried! i do not deny that is a serious blow. but after all, who has the right to cast a stone against one who has suffered? cannot repentance wipe out an act of folly? why should there be one law for men, and another for women? mother, i forgive you. [tries to embrace her again.] what is the best conclusion that can be drawn about jack, based on his words and actions in this excerpt? he has a tendency to be rude. he is inclined to show his emotions. he has a tendency to be gullible. he is inclined to be unresponsive.

The book the sweet-hereafter; in section four, which of the following is the extended metaphor for nichole's mental state. a) the room her father built her from the sun-room b) the wheel chair she sits in c)the computer from mr. stephens d) the teddy bear from her childhood

What point of view is expressed by judith sargent murray in her essay "on the equality of the sexes"? a- that men would benefit from women learning more about taking care of their homes b- that women's lives would be enriched if they had access to further education c- that children would progress further in school if their mothers studied with them d-that society would be more accepting of women who attended school