What is the probability that a number selected from 1 to 30?

Total number of outcomes = 30.Prime numbers in 1 to 30 are 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29.Number of favourable outcomes = 10.

∴ P(getting a prime number) = `("Number of favourable outcomes")/"Number of all possible outcomes"`

`=10/30 = 1/3`

Thus, the probability that the selected number is a prime number is `1/3`.

Hence, the correct answer is option (c).