Use of the term Chicano indicated:

1. Mexican American opposition to illegal immigration

2. increasing opposition of Hispanic Americans to the Vietnam War

3. efforts of Hispanic Americans to make Spanish the national language

4. growing political assertiveness among Mexican Americans

5. the New Left’s major influence upon young Hispanics

The question is so vague..
I chose 4.

I agree with you on 4.

The term Chicano refers to the growing political assertiveness among Mexican Americans and their identification with their Mexican heritage while living in the United States. To arrive at this answer, it is important to understand the historical context and the social movements of Mexican Americans.

Chicano is a term that emerged during the Civil Rights Movement in the 1960s as a way for Mexican Americans to reclaim their cultural identity and challenge discrimination and inequality. Mexican Americans began to embrace the term Chicano as a political and cultural expression of resistance and self-empowerment.

Option 1, Mexican American opposition to illegal immigration, is not directly related to the term Chicano. While this issue may have been a concern for some Mexican Americans, it does not define the term itself.

Option 2, increasing opposition of Hispanic Americans to the Vietnam War, is not specifically tied to the term Chicano. While there were indeed Hispanic Americans who opposed the Vietnam War, this opposition was not exclusive to Chicanos.

Option 3, efforts of Hispanic Americans to make Spanish the national language, is also unrelated to the term Chicano. The movement for Spanish language rights and bilingualism does not specifically align with the cultural and social dynamics associated with being Chicano.

Option 5, the New Left's major influence upon young Hispanics, is not directly connected to the term Chicano either. While some young Hispanics may have been influenced by the New Left, the term Chicano predates this movement and is rooted more in the Civil Rights Movement and the activism of Mexican American communities.

Therefore, option 4, growing political assertiveness among Mexican Americans, is the most accurate choice. This option reflects the primary reason for the use of the term Chicano – to signify a political and cultural consciousness, as well as a sense of solidarity and mobilization among Mexican Americans.