African American Vernacular English and Chicano English share which of the following characteristics?

The deletion of the final "r" sound, often referred to as "r-dropping," is primarily associated with certain dialects of English, particularly in working-class British English and some Caribbean English varieties. While this feature may appear in various accents, it is not a defining characteristic of either AAVE or ChE, which have different phonological patterns.

While both AAVE and ChE may exhibit unique syntactical structures, the use of prepositional phrases instead of possessive nouns is not a prominent or shared characteristic between the two. Instead, variations in possessive forms often arise independently within each dialect without a common linguistic rule.

The pronunciation of the "z" sound as "s" occurs in some Spanish-influenced dialects, particularly in certain varieties of Chicano English. However, it is not a characteristic shared with African American Vernacular English, which maintains distinct phonetic rules and does not exhibit this particular pronunciation pattern.