Demand for healthy kidneys is high in both India in Nepal. But it is also illegal to buy or sell organs. Despite the legal and social disapproval, there is an illegal market for organs. Assuming the legal and social disapproval does not influence buyers but discourages sellers from offering organs, the disapproval will .

Raise price but lower quantity.  

Explanation:

The kidney is a very important organ. It is a feasible organ. Many of the people are there who lives a happy life with their only one kidney. There is one-third doner of kidney in the world. The kidney is a very important organ that makes whole life healthy if this organ is healthy.

But there are very fewer people who donate their organs to stranger people. Most of the people are there who donate only their family members. Around the third proportion of the living donor of a healthy kidney and these lead to healthy life outcomes.

Price of organ (kidneys) would increase.

Explanation:

Any market is at equilibrium where demand = supply & the curves intersect. Demand & supply curves are downward & upward sloping respectively, because of respective negative & positive relationship with price.

If the legal & social disapproval for sale of organ (kidney) doesn't influence buyers but discourages sellers from offering organs :

The demand for organ (kidney) will remain same, but the supply of organ (kidney) will decrease. This will shift the upward sloping supply curve leftwards & it would create excess demand. Excess demand would create competition among buyers & would increase the price of organ (kidney).