Final answer:
The change in temperature after four days is -3/4°F.
Step-by-step explanation:
To find the change in temperature after four days, we need to multiply the daily change (-3/16°F) by the number of days (4):
-3/16°F × 4 = -12/16°F
Simplifying -12/16°F, we get -3/4°F.
Therefore, the change in temperature after four days will be -3/4°F (Option B).