Answer:
a. It is equal to zero
Step-by-step explanation:
As the possible results of a continuous random variable are infinite, it is most common to talk about probabilities on intervals; A singular and particular value is so difficult to obtain in an experiment because there are infinite possibilities, and a specific value is just a very little part of the possibilities.
That is the reason why, as a definition, that probability is always zero when you have a continuous random variable.