* "Humanity" is a word, not a sound. It's made up of multiple sounds.
* Vowel sounds are individual sounds within a word. The word "humanity" has the vowel sounds /uː/ (as in "moon"), /æ/ (as in "cat"), and /ɪ/ (as in "bit").
* Long and short vowel sounds are concepts related to pronunciation, not the word itself. The vowel sound /uː/ in "humanity" is considered a long vowel sound, as it is held for a longer duration than a short vowel sound like /ɪ/.
So, the answer is that "humanity" contains both long and short vowel sounds.