Which of the following describes a simple event?

A. spinning a spinner and drawing a card from a deck of cards

B. tossing a coin

C. drawing 3 cards from a deck of cards

D. tossing 4 coins

Answer - B (Tossing a coin)

A simple event is an event where only one experiment happens at a time (such as tossing a coin), and the event has only one outcome. When two events are occurring simultaneously (such as spinning a spinner and drawing a card from a deck of cards, drawing 3 cards from a deck of cards or tossing 4 coins), then it is no longer a simple event; it is a complex event.

Spinning a spinner is the correct answer, because it is the simplest thing you can do.