Someone after pavlov’s dogs became conditioned to salivate at the sound of the bell, he experimented with ringing the bell and then failing to present the dogs with any food right away. soon they stopped salivating to the sound of the bell. this represents the process calleda. spontaneous recovery. b.extinction. c.acquisition. d.testing.

b. extinction

Explanation:

The term extinction refers to the process of disappearing a response from an individual's repertoire. In the respondent paradigm, extinction occurs when a conditioned stimulus stops eliciting a particular response. Thus, the conditioned reflex response can disappear if the conditioned stimulus is presented repeatedly without the presence of the unconditioned stimulus, causing the eliciting effect of the conditioned stimulus to cease to exist. For example, if Pavlov, after his responding conditioning experiment, decided to present the bell repeatedly without the presence of food, that bell would cease to function as a saliva elicitor, characterizing a respondent extinction process.

it contracts and pulls the lungs downwards. this opens the lungs and chest cavity and allows air to come into the lungs.