Answer: The answer is (D)

Step-by-step explanation: Given that there are 3 feet in 1 yard, which ios equivalent to 12 feet in 4 yards. We are to select the correct option from the four proportions that can be used to represent this.
1 yard = 3 feet implies 4 yards = 12 feet.
Therefore, the required proportion will be written as

Thus, the correct option is (D).