Given:
The area of the triangle is 24 yd²
The height of the triangle is 4 yd.
We need to determine the base of the triangle.
Base of the triangle:
The base of the triangle can be determined using the formula,
[tex]Area=\frac{1}{2}bh[/tex]
where b is the base and h is the height of the triangle.
Substituting [tex]Area =24, h=4[/tex] in the above formula, we have;
[tex]24=\frac{1}{2}b(4)[/tex]
Simplifying, we get;
[tex]24=2b[/tex]
[tex]12=b[/tex]
Thus, the base of the triangle is 12 yard.
Hence, Option A is the correct answer.