Answer:
Option B : 38/2 is the correct answer.
Explanation:
Given that: 
Distance to travel = 38 miles 
Speed of object = 2 miles per hour 
Distance = Speed * Time
To find the time, we will divide the distance by speed. 
Time = 

Putting values of distance and speed in the formula.
Time = 38/2 
Hence, 
Option B : 38/2 is the correct answer.