Answer:
c. is liable for a defective product.
Step-by-step explanation:
The manufacturer can be held liable for a liability in a product which results into any form of injury or damage to the customer.
A defect refers to a kind of imperfection or fault in a product due to which such a product performs below par as per it's mentioned specifications.
In the given case, the customer bought in line skates and went out for skating. The wheels came off (which reflects a manufacturing defect), owing to which she fell and suffered a broken leg.
The injury is an outcome of product manufacturing defect for which the manufacturer shall be liable.