I'm choosing 't' because it's one of the most common consonants in English. Given the pattern "_a__e_", this could be a word like "target", "tasker", or similar words where 't' could appear at the beginning and/or end positions. Since we already know there are 'a' and 'e' vowels in the word, guessing a high-frequency consonant like 't' gives us a good chance of revealing more of the word structure.