Final answer:
The assertion that most adolescents affiliate strongly with one political party over another is not strictly true or false. Adolescents often inherit political views from their parents, and while many lean towards the Democratic Party, there is a significant trend of youth identifying as Independent due to disapproval of partisanship.
Step-by-step explanation:
The statement in the twenty-first century most adolescents affiliate strongly with one political party over another is not categorically True or False because political affiliation among adolescents varies. However, there are trends where adolescents tend to have similar political ideologies to their parents, with around 70% following their parents' political ideologies. While many young people tend to favor the Democratic Party, a significant number also identify as Independent and are more issue-focused rather than party-focused.
Recent data, though, indicates that a larger proportion of younger voters are choosing to affiliate with one of the two major parties, particularly the Democratic Party. Yet, some young Americans are put off by partisan politics and committed partisanship, which can lead to a decreased likelihood of affiliation with traditional political parties. In addition, the disillusionment with partisan approaches sometimes pushes young voters to identify as Independents.
Historically, party identifiers make up the majority of the voting public, and most adults in the U.S. identify with one of the two major parties. Nevertheless, a significant portion of self-proclaimed independents lean toward one party, indicating that partisan support is still prevalent even if not outright declared.