The correct option is C.
Primary reinforcer refers to the basic needs of an animal, such as food, water, shelter, etc. Secondary reinforcer, which is also called condition reinforcer refers to the condition in which a stimulus reinforces a behavior after it had been associated with a primary reinforcer.
In the question given above, the primary reiforcer is food.
Because many people don't know enough about sun damage to protect themselves from developing skin cancer.
Answer:
It's the first option. After mitosis the cell breaks into two equal parts.
Explanation:
For ex: if a cell that has 18 chromosomes and goes through mitosis, then there'll be 2 cells with 9 chromosomes each.
