A. Spreading them out into a single layer and placing them in a cool spot
Explanation:
when foods are cooled after cooking the Resistant starch is increased. This process is called starch retro gradation. It occurs when some starches lose their original structure due to heating or cooking. If these starches are later cooled, a new structure is formed therefore the best way to cool the starchy vegetables like carrots is to spread them out into a single layer and placing them in a cool spot
