Given those answer options, answer the question: Read the following article and answer the question. Article: A little boy went to a telephone booth at the cash counter of a store and made a phone call. The store owner looked at him and listened to the conversation. Boy: "Lady, can you give me the job of cutting your lawn ?" Woman (at the other end of the phone line): "No, thank you. I already have someone to cut my lawn." Boy: "Lady, I will cut your lawn for half the price the person who cuts your lawn now." Woman: "I'm very satisfied with the person who cuts my lawn." Boy (with more perseverance ) : "Lady, I'll even sweep the floor and the stairs of your house for free."[:Zxxk.Com] Woman: "No, thank you." With a smile on his face, the little boy hung up the phone. The store owner, who was listening to all this, walked over to the boy. Store owner: "Son... I like your attitude . I like that positive spirit and would like to offer you a job." Boy: "No, thanks." Store owner: "But you were really asking for one." Boy: "No, Sir. I was just checking my performance at the job I already have. I am the one who is working for that lady I was talking to." Question: The boy said to the lady that he would even sweep her floor and stairs for free because _ . Answer:
A:
he wanted to know if he did his job well enough and couldn't be replaced by others.