The letters 'a', 'e', 'o', 'r', and 't' have been guessed already. The current word has the pattern r__t__, and common letters that could fit those blanks include 'i', 'u', 's', or 'n'. Given the ending 't__' might suggest a common letter like 'i' in words such as 'right' or 'rivet', I will guess 'i'.