Reinforcer is any reward that satisfies a basic, biological needs such as hunger, thirst or touch is called what?

A PRIMARY reinforcer is any reward that satisfies a basic, biological needs such as hunger, thirst, or touch.

The answer is a primary reinforcer.

Explanation:

Primary reinforcers are those which are important in terms of biology. These reinforcers don't require to make any effort, it means that they occur naturally. Some examples of these reinforcers are food, water, sleep, and sex.

Primary reinforcers do not need an individual or process to make them work. They have had an evolutionary basis because they have been an aid for allowing the different species to survive. Primary reinforcers are considered natural but experience, as well as genetics, have played a role in their development.  

the answer would be c. sediment buildup on continental slope

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answer; allows decision to stand;