Correct Answer: Instinctive

Solution : The correct choice is the third option.

Spontaneous refers to something done or occurring naturally, without premeditation or external stimulus. Instinctive closely matches this meaning, as it describes actions or reactions that are natural, automatic, and arise from an inherent inclination rather than conscious thought.

The meanings of the other words are:

• Attractive means pleasing or appealing to the senses, especially visually. It can also refer to something that has qualities that draw attention or interest.
• Exhaustive means thorough, comprehensive, and covering all aspects of a subject. It implies that nothing has been left out.
• Acquisitive means characterised by a strong desire to acquire and possess things, often material possessions. It's associated with a tendency to want to own or control things.