Final answer:
The formula for calculating the area of a square is A = s², with 's' being the side length. This produces a result in square units, which is consistent for measuring the area. The correct answer is Option A) A = s².
Step-by-step explanation:
The formula for calculating the area of a square is A = s², where A represents the area and s represents the side length of the square.
For example, if a square has a side length of 3 meters, the area would be 3 m × 3 m = 9 m².
To ensure dimensional consistency, the formula must produce a result in square units, as an area is a measure of two-dimensional space.
Among the options provided, the correct formula is A = s², signifying that the area is equal to the square of one side's length.
Hence, the correct answer is Option A.