Answer:
A) Bob
Explanation:
A indirect object is a noun that is referring to someone or something affected by the action.
In this case:
1) The direct object would be the ball.
2) The indirect object is Bob.
3) The verb (or action) is threw.
4) The subject of the sentence is Tom.
Learn more about direct and indirect objects, here:
https://brainly.com/question/9700436
