How can you make a dog drool at the sound of a bell? pair the sound of the bell with the sight of some food and then eventually remove the food but keep the sound of the bell keep the food always in sight no matter what then quit sounding the bell no option works

Pair the sound of the bell with the sight of some food and then eventually remove the food but keep the sound of the bell

Explanation:

This is an example of a technique called Conditionally Classical which is a learning process that occurs through associations between an environmental stimulus and a natural stimulus.

Based on this, we conclude that the dog learns to salivate before the environmental stimulus (Sound of the bell) even in the absence of the natural stimulus (food). Since dogs naturally salivate before food .

there is an explationation of this on a site called crash   course world history 1