There are four marbles in a bag with the colors red, white, blue, and green. John pulls out one marble and tosses a coin. How many elements are there in the sample space?
A. 2
B. 4
C. 8
D. 16.
1 answer
There are 4 choices for the marble, and 2 choices for the coin toss (heads or tails). By the multiplication principle, the sample space has $4 \times 2 = 8$ elements, so the answer is $\boxed{\textbf{(C) }8}$.