**Core Concept**
The relationship between mosquito prevalence and altitude is influenced by **ecological** and **environmental factors**. Mosquitoes are sensitive to changes in **temperature** and **humidity**, which vary with altitude.

**Why the Correct Answer is Right**
As altitude increases, **temperature** generally decreases, and **humidity** levels may also change, making the environment less suitable for mosquito survival and reproduction. This is because mosquitoes thrive in warm, humid conditions, typically found at lower altitudes.

**Why Each Wrong Option is Incorrect**
**Option A:** This choice is incorrect because it does not specify the relationship between mosquitoes and altitude.
**Option B:** This option is wrong as it suggests an increase in mosquitoes with height, which contradicts the general trend.
**Option C:** This choice is incorrect because it implies no change in mosquito population with altitude.
**Option D:** This option is wrong as it is not a complete statement regarding the relationship between mosquito prevalence and altitude.

**Clinical Pearl / High-Yield Fact**
Remember that **mosquito-borne diseases** such as malaria and dengue fever are more prevalent in low-lying, tropical areas due to the presence of mosquitoes in these regions.

**Correct Answer:** D. False