<u>Answer:</u>
Integrator compares sensory information to a target value.
<u>Explanation:</u>
- Integrator is responsible for sending 'instructions to an effector' based on 'sensory information' which eventually give responses.
- These effectors execute the necessary changes required to adjust with the environment. Integrator act as the control centers.
- Integrators send signals to the effectors after comparing the variables or changes at a definite set point.
- However, its function mechanism is 'dependent on the feedback loop'.
Answer: D. Hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.
Hypothesis A and B both are suggesting that caffeine intake is related to higher heart rate. But hypothesis B is proving it more certainly by suggesting the affects of caffeine intake on heart rate. As, heart rate of most people will be higher 30 minutes after they drink a cup of coffee is testifying the fact, that higher heart rate is related with caffeine intake.
Therefore, hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.
