Molly spends most of her time with her friends, mostly other students at her school who share her attitudes and opinions. this probably means that molly and her friends make what kind of sample of all the students at the school

answer; an unrepresentative sample;

the first two-party system consisted of the federalist party, who supported the ratification of the constitution, and the democratic-republican party or the anti-administration party (anti-federalists), who opposed the powerful central government, among others, that the constitution established when it took effect in

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.