Give three motivating factors why a good number of christians are simply nice to others.?

1. Christians believe that just as God did, they are to follow the ten commandments.
2. Christians believe that even if someone has sinned (commit something wrong) against them, that just as God sent his son, Jesus on the cross to die for their sins, forgiveness is inevitable.
3. Christians are simply nice because they want to give an example of how Christian people are and that God can provide good character and friendship among themselves with others.

Not b or c so that leaves you with a or d. a is the better choice.