Final answer:
Xuxez's most likely objective for the promotion of its new brand is to familiarize viewers with the brand and increase brand recognition among teenagers by having the main characters of Riverdale wear its sportswear during certain episodes.
Step-by-step explanation:
Xuxez's most likely objective for the promotion of its new brand is to familiarize viewers with its newest brand. By having the main characters in the popular teen series Riverdale wear its sportswear during certain episodes, Xuxez aims to increase brand recognition among the target audience of teenagers. This strategy leverages the popularity and influence of the TV show to create a connection between the brand and the viewers, increasing the likelihood that they will consider purchasing Xuxez's sportswear.