Question: Identify the factors and their levels in the following research designs.

a. Men and women's enjoyment of two different sporting events are compared using a 20-point enjoyment scale.

b. The amount of underage drinking, as documented in formal incident reports, is compared at "dry" college campuses (no alcohol at all regardless of age) and "wet" campuses (those that enforce the legal age for possession of alcohol). Three different types of colleges are considered: state institutions, private schools, and schools with a religious affiliation.

c. The extent of contact with juvenile authorities is compared for youth across three age groups, considering both gender and family composition (two parents, single parent, or no identified authority figure).