This is a test of commonsense with single/multi-choices. Complete the next sentence:

He begins by aiming the ax directly on the tree bark that is already chopped close to the ground. he

Options are:
[a]. then lifts his ax and brings it down with force, directly on the tree bark.
[b]. picks up the ax and starts chopping it onto the tree.
[c]. grabs the ax from the ground and begins using it to pull back the wood between the trunk and the bark around it's base and move the logs with the ax.
[d]. curves the ax a little before finally letting it fly.
The answer is:
[a].