"Brave New World", Huxley wrote many other books, yet this is his most popular and most enduring. What is it about this book that has captured our imaginations for so long? Are there aspects of it that seem dated?

unconditioned stimulus

Explanation:

Unconditioned stimulus -

It is the stimulus , which is naturally , unconditionally and automatically triggers a response is referred to as unconditioned stimulus.

This stimulus takes place without any prior thought or knowledge .

For example ,

The smell of the food , automatically makes the person hungry .

Hence, from the given scenario of the question,

The loud noise is an unconditioned stimulus.

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unconditioned stimulus

Explanation:

Unconditioned stimulus -

It is the stimulus , which is naturally , unconditionally and automatically triggers a response is referred to as unconditioned stimulus.

This stimulus takes place without any prior thought or knowledge .

For example ,

The smell of the food , automatically makes the person hungry .

Hence, from the given scenario of the question,

The loud noise is an unconditioned stimulus.

Read more on -

Explanation: