Answer: C. Involuntary manslaughter
Step-by-step explanation:
This is involuntary manslaughter because the man was negligent in the action that led to the death of the shopper. In other words, he did not mean to do it and it happened only because he wasn't careful.
This rules out murder because a killing has to be intentional to be ruled as murder. It also rules out voluntary manslaughter because the man did not mean to kill the shopper by his actions.