The correct answer is (a) - it had become dark and the stray dogs at the beach were about to attack Nisha. We have already established under Question 2 that Nisha is guilty of abandoning the pup in circumstances which render it likely to suffer pain, starvation or thirst. However, it’s an offence only if Nisha did so ‘without reasonable cause’. However, if the stray dogs were about to attack Nisha and Nisha only escaped to avoid being attacked by them, this can amount to a ‘reasonable cause’ and therefore, a good defence.
Options (b), (c), and (d) are not correct since they have no relevance to the offence that Nisha is guilty of and do not in any way change the nature or characterisation of her actions under the law as specified above.