When determining the range of effects of a program, which factor must be included in the analysis?

In which of the following research areas would naturalistic observation be difficult?

A) School children's behavior on playgrounds B) Marital conversation during intercourse C) Visitor behavior at football games D) Basketball court usage at hospitals

People very often vote without __________

A) any party affiliation B) knowing precisely what they are voting for or why C) having been granted citizenship D) knowing the parties involved in the election