Explanation:

The adjective 'nasty' describes the neighbour, suggesting a negative trait. Therefore, the gossip they spread would likely also be negative or harmful. 'Malicious' means intending or intended to do harm, which fits perfectly with 'nasty' and 'gossip'. Option A ('amiable') means friendly. Option C ('benign') means gentle or kind. Option D ('tender') means delicate or soft. These positive or neutral adjectives contradict the context set by 'nasty'.