Right option is (c) \(\frac{1}{4}\)
To explain I would say: Deck of cards contains 52 cards. There are 13 cards of hearts, spades, clubs and diamonds. The 13 cards are A, 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K. The probability of picking a spade card from deck of cards is \(\frac{1}{4}\).