Reread this excerpt from The Call of the Wild.

He did not like to be approached on his blind side. Of this offence Buck was unwittingly guilty, and the first knowledge he had of his indiscretion was when Sol-leks whirled upon him and slashed his shoulder to the bone for three inches up and down. Forever after Buck avoided his blind side, and to the last of their comradeship had no more trouble. His only apparent ambition, like Dave's, was to be left alone.

What is the best description of Sol-leks‘s character, based on this excerpt?

He is a brute of a dog who seeks opportunities to show his strength.
He does not seek confrontation, but he is vicious in his own defense.
He is a faithful friend who guards his teammates from violent attacks.
He is a loner, but he is receptive to Buck’s offering of friendship.
Mark this and return

The Call of the Wild is a novel written by Jack London. It tells about a dog named Buck, who is stolen and sold into service as a sled dog in Alaska, and the changes he experiences in the harsh, cold environment, surrounded by other dogs.

Based on the given excerpt, we can conclude that Sol-lek doesn't seek confrontation but can be vicious when he feels like he needs to defend himself. We are told that he doesn't like being approached from his blind side and that he hurt Buck when he approached him like that. Sol-lek was simply defending himself and that is why he lashed out. After that incident, he and Buck were great friends, based on which we can conclude that he doesn't seek confrontation for no reason.

This is why the second option is the correct one.