Whenever Mr. Redding catches himself saying, "This pain is ruining my life," he is supposed to immediately tell himself, "STOP! I am in control of my pain." This pain management technique is known as restructuring.

Cognitive Restructuring  

Explanation:

Cognitive restructuring is the method or technique used to identify and challenge negative thoughts and beliefs. Cognitive restructuring helps to identify and replace irrational thoughts and replace them with positive and more rational thoughts and accurate thoughts that are less stress - inducing.

Basically it helps to change thinking habits to a better one.

Therefore, the technique used by Mr. Redding is called Cognitive restructuring

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ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'