What is the purpose of the following sentence? i think it would be best to study the problem carefully

Correct my question my english is not good: “what the effect and the effectiveness of strength exercise in breast cancer medication related to lymphedema? ”

Read the following excerpt from the play a raisin in the sun by lorraine hansberry: johnson (this usa woman who decided long ago to be enthusiastic about everything in life and she is inclined to wave her wrist vigorously at the heigh of her exclamatory comments.): hello there, yourself! h’you this evening, ruth? which assumption about johnson is most likely true based on the stage direction? a. her enthusiasm is used to mask her fear of public places

Read this passage from "the pedestrian" by ray bradbury: which sentence best describes the overall impact of the setting?