To answer this question, we need to remember that:
1. A typical deck of cards has 52 cards, and they are of the following kinds:
• 13 ---> Spades
,
• 13 ---> Hearts
,
• 13 ---> Clubs
,
• 13 ---> Diamonds
2. Therefore, we have, in total:

3. Since we need the probability of choosing a heart card from a deck of cards, then we have that this probability is:

That is, we have 13 cases from the possible 52.
Therefore, in summary, the probability of choosing a heart card from a deck of cards is 1/4 (third option).