Determine whether the following values represent a discrete random variable, continuous random variable, or not a random variable:

a. The time it takes to fly from City A to City B
b. The number of free-throw attempts before the first shot is made
c. The political party affiliation of adults in the United States
d. The amount of rain in City B during April
e. The number of light bulbs that burn out in the next week in a room with 13 bulbs
f. The height of a randomly selected giraffe

a. Continuous random variable
b. Discrete random variable
c. Not a random variable
d. Continuous random variable
e. Discrete random variable
f. Continuous random variable