What do individual shareholders gain when they buy shares of a company’s stock?

Individual shareholders will have the right to receive dividends declared. They can sell their shares and have the right to purchase issued shares. They can vote on the directors nominated by the board. They also have the right to the remaining assets after liquidation. 

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

prokaryotic cells do not contain a nucleus or any other membrane-bound organelle. eukaryotic cells contain membrane-bound organelles, including a nucleus. so i belive the answer is a : p hope it