Answer:
B. 1,500 miles
Explanation:
From the statement of the question, d is a decreasing variable, that starts in 1900 miles and ends in 0 at the end of the trip.
From that we calculate the value of d as:
d=1900 miles - distance traveled
And since, after the first stop, the ship has traveled 460 miles, we have:
d=1900 miles -460 miles = 1440 miles
The closest value to 1440 miles is B. 1500 miles, so that would be the correct answer.