As part of a behavior modification program, Kendra and her partner each agree to praise the other if she completes her assigned household chores by the end of the day. Such praise is an example of:.a. primary reinforcement and positive reinforcement.
b. secondary reinforcement and positive reinforcement.
c. positive reinforcement only.
d. primary reinforcement only.

b. secondary reinforcement and positive reinforcement.

Explanation:

Primary and secondary reinforcement are part of positive reinforcement. Where secondary reinforcement focuses on rewarding on biological needs, secondary reinforcement focuses on learning behavior that is not biologically linked but can be learnt through artificial sources.

In the above example, the act of praising the partner on certain acts will inculcate that behavior. This is a form of secondary reinforcement which part of positive reinforcement.

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.