It mean you are choosing from two or more options.

The best and safe way for birth control is using Condom or opting for Copper T. Consult a Gynecologist before opting for copper T

An opting out agreement is an agreement between the parties of a contract. It is designed to notate how a person can get out of a certain contract legally. An opting out agreement still has to be approved by all parties involved in signing the original contract.

Yes, I think that is happening.

Prior to opting into legal service plans, a person should take into consideration the level of expertise, the expense, and the expected period of time until resolved.