Answer:
"Today, young people have less contact with senior citizens than in years past."
Step-by-step explanation:
The main idea identifies what the passage is about. An author can write in order to express an opinion. Sometimes authors write to communicate important information. The main idea of this passage deals with the amount of time that young people and senior citizens spend together. More specifically, the author believes that the two age groups do not spend enough time together. The first sentence ("Today, young people have less contact with senior citizens than in years past.") best shows the main idea of the passage.