Final answer:
Option B, which states that the board approved a 34 percent budget increase, is the most precise sentence because it provides a specific figure. This level of detail offers clear and measurable information, unlike the qualitative descriptions in the other options.
Step-by-step explanation:
The sentence that uses the most precise language among the options presented is: B. The board approved a 34 percent budget increase.
This sentence provides a specific figure, 34 percent, which gives exact information about the size of the budget increase approved by the board. Facts that use numbers are called statistics, and they provide clear and measurable information. Using precise statistics, like the earth's temperature increase or the total number of ballots cast in the election, ensures that the language is not open to interpretation, unlike adjectives like 'large,' 'substantial,' or 'sizeable' which are relative and can vary in meaning.
An explanation of why the other options are less precise: A, C, and D use qualitative descriptions without specific details, which makes them less precise compared to the numerical information provided in option B.