Question

what is the key to insight? only occurs for creative people. takes practice. is instinctual. just happens.

Explanation:

Insight, in psychological and learning contexts, is not limited to creative people (so "Only occurs for creative people" is wrong), not purely instinctual (ruling out "Is instinctual"), and doesn't just happen randomly (ruling out "Just happens"). Insight development, like in problem - solving or understanding, requires practice (e.g., practicing critical thinking, problem - solving tasks) to improve the ability to gain insights.

Answer:

Takes practice.