Answer:
Option B.
Explanation:
It is given that the number of jellybeans in a large jar exceeds twice the number of jellybeans in a small jar by 12.
Let j be the number of jellybeans in the small jar.
Twice the number of jellybeans in a small jar = 2j
Exceeds twice the number of jellybeans in a small jar by 12 = 2j+12
The number of jellybeans in a large jar is represented by the expression 2j+12.
Hence, the correct option is B.