Right answer is (d) Reducing drug solubility in saliva and lower affinity for taste receptors
Explanation: Reason for poor patient compliance particularly for children is very important. For children, bitterness, acidity, causticity, and even the color matters a lot. Two approaches for changing or decreasing bad taste are, reducing drug solubility in saliva and lower affinity of the drug for taste receptors, thus patients cannot taste the drug.