Determine whether the random variable is discrete or continuous.

(a) The weight of a Chicken Bacon Ranch sandwich from Subway.

(b) The elapsed time from when you left your house to when you arrived in class this week.

(c) The number of people in each passing car on the highway.

(d) The blood - alcohol level (measured as the percent of the blood that is alcohol) of a driver being pulled over by the police in a random sobriety check.

(e) The number of eggs laid by a randomly selected salmon in a fishery.