To find the probability of selecting the letter "A" from the given letter tiles H, O, N, E, S, T, we first need to note the following:
- There are 6 tiles in total.
- The letters on the tiles are H, O, N, E, S, T.
- There is no letter "A" among the tiles.
Since there are 0 occurrences of "A" among the tiles, the probability of selecting "A" is 0.
Thus, the correct response is:
0