Samantha is conducting a study on stress management in newly hired employees at a large corporation. She is measuring the levels of stress through blood work and EKG monitoring of the new hires. Samantha is collecting measures for her dependent variable.

Samantha is collecting physiologic measures for her dependent variable.

Explanation:

Physiological assessment requires measuring the factors directly or indirectly due to the normal working of functions and sub-components in the body of human. This test's methods and techniques are varied but all are dependent on empirical observation. Physiological stress describes a wide variety of physical reactions arising as a direct consequence of a stressor triggering an disturbance in the body's homeostasis. The body will react by activating the nervous, endocrine, and immune systems after immediate interruption of either psychological or physical stability.

a and c

explanation:

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.'