opt in something
opt into something

They opted, in short, for security over risk, a choice many Americans find puzzling.

He opted out of a deal in Portland that still had three years and $13 million remaining.

Forced to choose, we usually opt for nature - in our books.

On graduation Reagan opted for a career in show business.

He opted out of the state race in April 2007.

They'll opt instead for Palm's new m130, which is, in some ways, an even more significant development.

About 30 percent of the state's 811 districts opted into the program in 1999.

What changed your mind, and particularly why did you opt for the maximum use of force in this situation?

As it turned out, on Friday the jury opted for life in prison.

Mitchell was the son of a minister who opted for a career in the law.