Which of the following is an example of conformity?

1- john loses interest in activities he used to enjoy and has trouble sleeping.

2- malcolm acts, dresses, and speaks like the teens he hangs out with at school.

3- joey isolates himself from people around him and stops attending school.

4- michael shows symptoms of anxiety and is unable to concentrate.

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.