Answer:
Option A.
Explanation:
It is given that a sponsored link was delivered 100 times and 10 people clicked on it.
Number of impressions = 100
Number of clicks = 10
The formula for click-through-rate (CTR) is
![CTC=\frac{\text{Total measured clicks}}{\text{Total measured impression}}* 100](https://img.qammunity.org/2020/formulas/mathematics/high-school/2hxdwh0oz5hxb1v6bulqttgewvz7bg87bp.png)
![CTC=(10)/(100)* 100](https://img.qammunity.org/2020/formulas/mathematics/high-school/tmg2n1cfqdiv2h9hhr7w4przs02d2qdlov.png)
![CTC=10](https://img.qammunity.org/2020/formulas/mathematics/high-school/thvzlxr6s50vxp9reo5ey6xtavdvp0s9qm.png)
The click-through-rate (CTR) would be 10%. Therefore, the correct option is A.