Final answer:
The length of the great white shark, when converted from feet to yards, is accurately represented as 7 yards. (option a is the correct answer).
Step-by-step explanation:
To determine the length of the 21-foot great white shark in yards, we employ the conversion factor of 1 yard being equal to 3 feet. This conversion factor is derived from the basic unit of length. By dividing the given length of the shark, 21 feet, by the conversion factor (21 feet ÷ 3 feet/yard), we arrive at the length in yards, which is 7 yards.
The conversion from feet to yards is a straightforward process, essential for expressing measurements in different units and facilitating a clearer understanding of size.
The accurate representation of the 21-foot great white shark's length in yards is 7 yards. Utilizing the conversion factor of 1 yard to 3 feet ensures precision in expressing the shark's size in a unit that may be more comprehensible for certain contexts or comparisons.