Which of the following is true about relationships?
a. reinforcement is not necessary for their success.
b. there are no feeling in a relationship.
c. trust isn't necessary in a relationship.
d. relationships involve two or more people.

I believe the answer is: D a relationship involves two or more people

Relationship is a situation that in some way connected one individual with another. This connection could be formed through various reasons. This include things such as Going to work at a same place, Pursuing education at the same university, the genuine feeling that we have for one another, etc.

regular hand soap prevents disease just as well as antibacterial soap. - d.