Which event is most likely to happen?

Responses

 randomly picking a consonant from the English alphabet
 randomly picking a consonant from the English alphabet

getting a 6 when rolling a single dice once
getting a 6 when rolling a single dice once

randomly picking a vowel letter from the English alphabet
randomly picking a vowel letter from the English alphabet

getting a head from a single toss of a fair coin

getting a head from a single toss of a fair coin