Concept: The Question tests on the basics of conversion.

Solution:
 

A NEW OG 2021 QUESTION

Its a Conversion Question

Milk production in 2014 = 2.7 billion pounds

= 2.7 x 1000 = 2700 million pounds

Milk production in 2007 = 980 million pounds

Increase in milk production = 2700 -980

= 1720 million pounds

1 gallon = 8.6 pounds

=> 1 pound = 1/8.6 gallons

Thus 1720 million pounds = 1720 x 1/8.6 gallons

Round 8.6 to 10 (given the large difference in options)and you would have 172 million gallons (approx.)

Nearest value to this is 200 million pounds (OPTION B)