Question

Which scenario represents a legally binding contract?

participating in the school's gardening club
agreeing to a summer lawn service with a set schedule and cost
deciding to mow a neighbor’s lawn whenever you have free time
choosing a lawnmower from a store and paying for it at the checkout

Answer 1

The scenario that clearly creates a legally binding contract is agreeing to a summer lawn service with a set schedule and cost. That arrangement has offer, acceptance, consideration and definite terms (so it’s enforceable).

(Choosing and paying for a lawnmower at checkout also forms a legally binding sales contract — a routine purchase — while the gardening club and “mow whenever you have free time” are informal/social arrangements without definite, enforceable obligations.)