Correct option (b) scion
Explanation :
A scion is grafted to a stock. The quality of fruits produced will be determined by the genotype of scion. Grafting is tire technique of joining parts of two plants so as to form a composite plant. One plant has a strong root system called the stock, and the other plant having better flower or fruit yield is known as scion. When a scion is grafted to a stock the root system of the plant has the genotype of stock and fruits produced show genotypes of the scion.
