Answer:
B) Martin can recover if he can prove that book racks do not fall out of windows in the absence of negligence and that Regalia Inc. had exclusive control of the rack prior to the fall.
Step-by-step explanation:
Negligence is defined as a situation where a person does not take due care and conduct oneself like a reasonable person in a given circumstance.
When a defendant is negligent he will be held responsible for damage that results from his negligence.
In this scenario Martin's parked his bike and makes a delivery, meanwhile a book rack falls on his bike.
Martin's can only recover against Regalia if he proves that he was not negligent in any way, and that Regalia had control of the rack before the fall.
For example if Martins did not park his bike in a designated parking spot, he can be seen to be negligent. In that case he will not be able to recover against Regalia.