In one test of anxiety, animals were given the choice of staying in the relative safety of a dark box, or of venturing into a lighted box.

FORBES: Thinking With Your Gut. Literally.

Retailers don't necessarily lose business from a relative dearth of online sales, since many consumers are simply embracing the alternative choice of shopping at traditional stores.

FORBES: Magazine Article

He also said many single-earning couples had "no choice" but to stay at home to care for a disabled child or an elderly dependent relative.

BBC: Bishop of Exeter, Rt Rev Michael Langrish

Similarly, in another test of anxiety, animals were given the choice of venturing out on an elevated and unprotected bar to explore their environment, or remain in the relative safety of a similar bar protected by enclosing walls.

FORBES: Thinking With Your Gut. Literally.