(B) 4 hr is the correct answer.
Explanation :
★ Speed of body is defined as the ratio of distance travelled to the time taken
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Given that,
distance = 56 miles
speed = 14 miles per hour
By substituting the values, we get
⭆ time = distance/speed
⭆ time = 56/14
⭆ time = 4 hr
Hope It Helps!