contestada

A candy bag contains 8 green, 7 blue, 12 red, and 11 orange candies.
You will choose 4 candies from the bag without looking.
Which answer choice describes an event that is not certain in this context?
*all combinations of 4 candies
*all combinations of 4 candies where at least 1 is red
*the bag full of candies (is this the correct answer?)
*4 orange candies