Which of the following culture-bound syndromes have features similar to panic

One in eight residents of the U.S. population aged 50 to 65 has difficulty walking three city blocks. For those who need to walk farther than that distance for work, this is an example of a(n) ______

Fill in the blank with correct word

Informal and formal groups composed of individuals of approximately the same age and status are ________ groups

A) postformal B) cliques C) peer D) cohort