At the National Zoological Park in Washington, D. C., a polar bear suffered a broken tooth, and keepers needed a safe way of treating the problem. The bear was rewarded first for sticking its nose through a slot in the cage door, then for allowing a keeper to lift its lip and touch its teeth. Finally, a veterinarian was able to treat the damaged tooth while the bear waited placidly for its familiar reward. This is an example of .
a. modeling
b. shaping
c. negative reinforcement
d. secondary learning

(B) Shaping

Explanation:

  Shaping is one of the technique that is used in the operand conditioning and the behavior shaping process in which we usually giving reward for accomplish the given task successfully.

 The shaping is also known as the procedure of the reinforcement behavior which involve the targeting behavior.

 According to the question, the given example is best illustrating the concept of shaping as polar bear is suffering from the tooth pain and veterinarian was easily able to treat the tooth problem while bear was waited for the reward.  

  Therefore, Shaping is the correct answer.

answer; the above statement is (false);

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.