1. 

Name a single letter that can be suffixed to the following words to from new words.

HAT    BAR    BAT    PIN    BATH
A. A
B. E
C. B
D. D

Answer: Option B

Explanation:

Letter E is suffixed to the following words

HAT + E   ----->    HATE

BAR + E   ------>   BARE

BAT + E   ------>    BATE

PIN + E   ------->   PINE

BATH + E  ------>  BATHE