Final answer:
The ratio of the height of the object to the length of the shadow is 2:3.
Step-by-step explanation:
To find the ratio of the height of the object to the length of the shadow, divide the height by the length. In this case, the height is 4 feet and the length is 6 feet. So, the ratio is 4/6. Simplifying this fraction, we get 2/3. Therefore, the ratio of the height of the object to the length of the shadow is 2:3. The correct option is A. 2:3