Answer:
The description that best fits the liberal side of the political spectrum is "more use of government to achieve equality." Liberals generally believe in using government intervention to promote social and economic equality, such as through policies like progressive taxation, social welfare programs, and regulations to protect workers and consumers.
The other two descriptions are associated with other parts of the political spectrum. The belief that "government should be involved as little as possible in people's lives" is often associated with libertarianism, which is on the opposite end of the political spectrum from liberalism.
The idea that "their beliefs are in the middle, seeking a balance with the role of the government" is sometimes associated with the political ideology of centrism, which aims to find a balance between left-wing and right-wing viewpoints, but is not necessarily tied to liberalism specifically.