Verbal Aptitude

Argument: 'To reduce groundwater depletion, the state government should mandate that farmers only irrigate at night when evaporation rates are lowest.' Which assumption underlies this proposal?

Options:

• (A) Farmers will not simply apply a larger volume of water during night irrigation than they currently apply during the day.
• (B) Crops do not absorb water during daylight hours.
• (C) Solar pumps can generate electricity during nighttime hours.
• (D) Night temperatures are always below freezing in agricultural zones.