The correct option is b that is fireworks hit the ground.
Graph
A graph is a diagram that represents the system of interrelations among two or more things with the help of dots, lines or bars, etc.
For firework
The graph represents the relation between the height in feet and time in seconds of a firework in the sky, where the line represents the height of the firework at a particular point in time.
Maximum height
As we can see the maximum height is been obtained between a time range of 2 seconds to 4 seconds, the height is been achieved exactly in the mid of this time range. therefore, the maximum height is been achieved at 3 seconds.
Height after 3 seconds of achieving Maximum height
Further, As we want to the height of the firework three seconds after it reached its maximum height, 3+3 = 6 seconds.
Looking at the graph, at 6 seconds the line is at 0 on the height axis. therefore, the height of the firework three seconds after it reached its maximum height is 0 feet.
Hence, the correct option is b that is fireworks hit the ground.
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