The correct answer is B. For.
People work and earn for themselves, their families, and their communities. They work to provide for their basic needs, such as food, shelter, and clothing. They also work to save for the future and to provide for their children’s education. In addition, people work to contribute to society and to make a difference in the world.
The other options are incorrect because they do not accurately reflect the reasons why people work. Option A, “In,” suggests that people work in a specific location. However, people can work in a variety of locations, including at home, in an office, or on a farm. Option C, “Why,” suggests that people work because they have to. However, many people enjoy their work and find it to be a source of satisfaction. Option D, “Around,” suggests that people work in a circle. However, people’s work is not always linear or predictable. It can be challenging and unpredictable, but it can also be rewarding.