The answer is c, because the men know that if Curley has found Lennie, they would of tortured him and killed him brutally, and so George wanted to shot him out of mercy
Ours makes more sense.
"Let's examine 'ours' for tone and style"
"Let's examine 'our is' for tone and style"
Wow very funny. What elementary university due you attend?
A TECHNIQUE A WRITER USES TO PRODUCE A SPECIAL EFFECT IN THEIR WRITING