Upon the death of Spitz in The Call of the Wild, Francois and Perrault decide that the new sled-team leader should be

ABuck.
BBillee.
CSol-leks.
DDave.

Verified Answer :

The answer is letter c. Sol-leks.  Though they both decided on this, Buck places
himself on the position of the leader.
Though they put the harness on Sol-leks, Buck attacks him and this frightens
Sol-leks and relents to let Buck take the lead.
The two come back with weapons but Buck will not go back to his
position.  They finally decide to let
Buck be the leader.