Ok, so
Ivanna is driving on the freeway at a constant speed. She then speeds up to pass a truck. After passing the truck, she exits the freeway and slows
down.
Notice that if the speed is constant, that means that the speed won't increase or decrease its value.
Then, the proper graph could be:
And the correct answer for (a) is c.
Now, the sight-seeing ship is stopped in the water for an hour. This means that it didn't change its distance. Then, the captain heads the ship back to the shore at a constant rate, which means that the distance to the shore is 0. The ship stays there for a while and then returns to the open sea.
Now, the correct graph will be:
The correct option is a.