Final answer:
The height of a sunflower that is 2.4 meters tall is 240 cm after conversion from meters to centimeters, corresponding to option (a).
Step-by-step explanation:
To convert the height of a sunflower from meters to centimeters, we need to know the conversion factor between these two units. Since 1 meter is equal to 100 centimeters, we can convert 2.4 meters to centimeters by multiplying 2.4 by 100.
2.4 meters × 100 = 240 centimeters
Therefore, the height of the sunflower is 240 cm, which corresponds to option (a).