Answer:
C. Spencer will win because regardless of whether Glen was acting within the scope of his employment, Sally is liable for his negligence
Step-by-step explanation:
Spencer will win the lawsuit and Sally is liable for negligence.
This is because, Sally was the person originally hired to do the roofing job.
She hired other workers to help her with the job, so she's liable to their actions and inactions.
Sally is operating under a working agreement (contract) and has already charged a fee of $10,000 so any punitive damages would be her responsibility.
Spencer was moving around and Glen threw some roofing shingles without any word of warning to people that might be in harm's way. So for Glenn's actions, Sally is liable for his negligence.