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A student runs on a treadmill for 10 minutes. She stops running and begins to measure the temperature of the skin on her arm at one-minute intervals for a total of 8 minutes following her run. She records the values in the table shown.

[tex]
\[
\begin{array}{|l|l|}
\hline
\text{Time (min)} & \text{Skin temperature (} {}^{\circ} C \text{)} \\
\hline
0 & 38.2 \\
\hline
1 & 38.2 \\
\hline
2 & 38.2 \\
\hline
3 & 38.0 \\
\hline
4 & 37.6 \\
\hline
5 & 37.5 \\
\hline
6 & 37.4 \\
\hline
7 & 37.2 \\
\hline
8 & 37.2 \\
\hline
\end{array}
\]
[/tex]

What can be inferred from these data?

A. The student's set point for body temperature is equal to or near [tex]$37.2^{\circ} C$[/tex].

B. The student's set point for body temperature is equal to or near [tex]$38.2^{\circ} C$[/tex].

C. The student's hypothalamus continued sending the same signals at 7 minutes that it sent at 0 minutes.

D. The student's set point for body temperature is equal to or near [tex]$37.2^{\circ} C$[/tex] and...

Answer :

To solve the question, let's analyze the data provided in the table, which shows how the skin temperature of a student changes over time after running on a treadmill. Here is a step-by-step explanation:

1. Initial Observation:
- At time 0 minutes, the student's skin temperature was 38.2°C. This temperature remains constant at 38.2°C for the first two minutes (0, 1, and 2 minutes).

2. Temperature Decrease:
- At 3 minutes, the temperature begins to decrease to 38.0°C.
- At 4 minutes, it further drops to 37.6°C.
- This trend of decreasing temperature continues as follows: 37.5°C at 5 minutes, 37.4°C at 6 minutes, and 37.2°C at both 7 and 8 minutes.

3. Temperature Stabilization:
- By 7 and 8 minutes, the skin temperature stabilizes at 37.2°C. It does not decrease further.

4. Inference on Body Temperature Set Point:
- The observed pattern suggests that after the initial phase of running, the student's skin temperature is adjusting downward from 38.2°C towards 37.2°C.
- Since the temperature stabilizes at 37.2°C, we can infer that this is likely the student's "set point" for body temperature in a resting or cooling-down state post-exercise.

Therefore, based on the data and observations, it can be concluded that the student's set point for body temperature is equal to or near 37.2°C.

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