The correct answer to this question is D, Control of postural reflexes. The hypothalamus has many functions, but one of them is not to control the reflexes of the postural. The things that the hypothalamus is supposed to do is regulate body temperature, control hunger, and protect hormones.
Knowing this, one can know when something is wrong with their hypothalamus. Many symptoms can indicate an issue with the hypothalamus. This includes feeling cold all of the time or suddenly feeling tired. Though these symptoms can deal with other conditions, it is vital to get checked to ensure it isn't something with the hypothalamus.
The answer to this is letter D. if there is something that the hypothalamus is not set out to do, it is to control the postural reflexes. There are other things that the hypothalamus is expected to do such as to release the hormones that the body may need and also to regulate body temperature.
You will know that there is something wrong with your hypothalamus if you find it easy to become cold and you are starting to feel tired all the time. These signs may be symptoms of other conditions so it is best that you get yourself checked immediately so that other potential issues with the same symptoms will be ruled out.