Correct Answer: impulsive

Solution : The correct choice is the second option.

Explanation : Spontaneous and impulsive share the characteristic of occurring without prior planning or external influence. However, there is a subtle difference in emphasis. Spontaneous may imply a natural or unforced occurrence, while impulsive often suggests a sudden, instinctive reaction.

Therefore, the correct synonym is impulsive .

The meanings of the other options are as follows:

• Prejudiced : This term refers to having a preconceived opinion or bias.
• Intended : This term suggests something done with a specific purpose or goal.
• Planned : This term indicates actions that are thought out and organised in advance.