Question

Every time an army drill sergeant calls out Ready aim fire the artillery shoots making a painfully loud sound that causes you to flinch. After a few repetitions you tense your muscles after the word fire before the shot itself. Here, the unconditioned stimulus is Select one: O a. the sergeants call O b. muscles becoming tense O c. flinching O d. loud sound

Answer 1

The unconditioned stimulus is

d. Loud sound

An unconditioned stimulus is one that naturally triggers a response in us. For e.g.  salivating when we see food which occurs naturally in our body.