To answer this question, you need to understand the characteristics of a hill. Let's go through each option to understand why it is correct or incorrect:
Option A) Trees - This option is incorrect because not all hills have trees. While some hills may have trees growing on them, it is not a defining characteristic of a hill.
Option B) Height - This option is correct because a hill is defined as a naturally raised area of land that is higher than the surrounding terrain. Therefore, height is an essential characteristic of a hill.
Option C) Animals - This option is incorrect because the presence of animals is not a defining characteristic of a hill. Animals may inhabit hills, but their presence is not necessary for it to be considered a hill.
Option D) Water - This option is incorrect because the presence of water is not a defining characteristic of a hill. While hills may have rivers or lakes nearby, the presence of water itself does not determine whether an area is a hill.
The correct answer is Option B) Height. This option is correct because the defining characteristic of a hill is its elevation or height, being higher than the surrounding terrain.