The correct option is B 188 km
Given, Speed = 47 km per hour
Time of travel = 4 hours
In 1 hour, the distance travelled is 47 km.
In 2 hours, the distance travelled will be
= 47 + 47
= 94 km
In 3 hours, the distance travelled will be
= 47 + 47 + 47
= 141 km
In 4 hours, the distance travelled will be
= 47 + 47 + 47 + 47
= 188 km