Which group of people was most directly affected by the twenty-sixth amendment

People with Eighteen years of age, is the right answer.

Explanation:

Amendment Twenty-sixth to the Constitution of the United States is very significant in the history of constitutional amendments of the United States. This Constitutional Amendment lowered the minimum voting age. Following this amendment, the voting age of American citizens was reduced to 18 from 21. Moreover, this Amendment prevents the federal and the state government from employing age as a reason for rejecting the right to vote to any of the U.S. citizens who is at least 18 years of age.

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.