If a student learned there is a quiz every Friday they will likely to do small bits of studying during the week and then drastically increase their studying right before the quiz. This is similar to behavior exibited by rats with a schedule of reinforcement.

Fixed-interval

Explanation:

Fixed-interval schedule of reinforcement is the reinforcement in which reward or benefit for first response is not provided until particular time has passed or certain time gap. Example- rat pushing the lever is rewarded at certain time.    

According to the question, students are also following fixed-interval schedule of reinforcement where they increase study before the quiz at certain time period for reward as success in quiz and study normally in small bit whole week.

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.

i do believe   by (keeping an organized record of all sources he or she referenced)good luck.

explanation: