The ad allows the person or person(s) who made it get money, in other words the one who made that ad are paying the person who made the eResource document money to put their ad in it.
You didn't give the options. However, i'll try.
To me, a stone cannot be ethical because it cannot suffer. Indeed, the capacity for suffering must be satisfied before we talk about interest in a meaningful way. For instance, nothing we could possibly do for a stone could make a difference in its welfare. It don't have interest. Whereas, we, humans have interest. Therefore we can be ethical because we are sentient beings that can be benifited or harmed. It's because we can experience pain as a result.
Hope this helps !
Photon
Russian folk and revolutionary songs.
You can tell they are songs because the picketers were singing as they marched.
You analyze and argument by breaking it down you set claims when you evaluate it