When harry met sally, they fell in love and were not shy about expressing their love for each other openly around campus. they soon noticed that other students were staring at and laughing at them. within a couple of weeks, they had toned down their public displays of affection. harry and sally discovered that most basic of all group norms, which is to

Conform

Explanation:

Conform is the way in which someone complies and obeys the regulation.This makes a person to act accordingly so that group or society standard could be maintained .It also creates harmony and adjustment in some fields.

According to the situation described in question,Harry and sally adjusted their behavior according to society and reduce display of affection publicly to maintain the same basics as other people and couples. Thus, the conformed theirselves to the group standards.

can you explain it better

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.