Final answer:
To find the probability of drawing a king from a standard deck, divide the number of kings (4) by the total cards (52), resulting in the probability of 1/13.
Step-by-step explanation:
The probability that a single card selected from a standard 52-card deck is a king can be found by knowing that there are 4 kings in a deck of 52 cards. The probability is the number of favorable outcomes (the 4 kings) divided by the total number of possible outcomes (the 52 cards in the deck), which yields a probability of 4 divided by 52. This simplifies to 1 divided by 13, so the correct answer is (a) 1/13.