Final answer:
The side lengths of the congruent squares are equal.
Step-by-step explanation:
The area of a square is determined by the length of its sides. In this case, the larger square has side lengths that are twice as long as the smaller square. Since the area of a square is calculated by multiplying its side length by itself, we can conclude that the area of the larger square is four times the area of the smaller square. Therefore, the correct answer is A) They are equal.