Jenny is running for more than an hour on a pleasant sunny morning. Her body is sweating to maintain homeostasis, which is caused by the action of a/an (blank). A. control center
B. effector
C. sensor
D. transmitter

The sweating that Jenny produces when she is running and that serves to maintain homeostasis, is caused by the action of an effector.

Explanation:

Sweating is a mechanism of homeostasis when there is an increase in body temperature, since sweat, when it evaporates, produces a decrease in body temperature. In this case, the sweating is due to an effector, the sweat glands.

The physical exercise, like the one Jenny does, generates an increase in body temperature, being this the stimulus that reaches the central nervous system, specifically the preoptic area. The response is translated into an increase in the production of sweat by the sweat glands, whose secretory cells are effectors.

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explanation: