Please pick the class of admission that is accurately reflective of your class of entry. Most people with few exception are issued an I-94 the can be accessed here to look up your class of admission: https://i94.cbp.dhs.gov/I94/#/recent-search

Canadians and Mexicans (with valid border crossing cards) who entered via land borders and Mexicans are generally "Waived through" and should pick that for class of admission.

We need to know your current visa status to assess if out platform is the right solution to assist you in a successful petition; some visa statuses are special and can have extraordinary needs that need to be satisfied to be eligible for adjustment of status.