Ahmad owns an apartment building and has recently had to lower the rent he charges, not only to attract new tenants but also to keep the ones he has. Which disadvantage of real estate investing is Ahmad most likely experiencing

Interest rate risk

Explanation:

Interest rate risk is described as the potential for investment loss which result from a change in interest rates. The increase in interest rate declines tell value if a bond or other fixed-income investment, the change that occurs in these bond price is known as duration. Generally, it is the risk that arises for bond owners from fluctuating interest rates. The interest rate risk of a bond depends on how sensitive it's price is to interest rate changes in the market

the answer would be voluntary exchange -

"the act of buyers and sellers freely and willingly engaging in market transactions. moreover, transactions are made in such a way that both the buyer and the seller are better off after the exchange than before it occurred."

hope this : )

-shy