Question

which expense is a variable cost?
insurance payments
monthly rent on a store
weekly advertisement picture in a journal
hourly wages for an office employee

Explanation:

Variable costs change with the level of production or business activity. Insurance payments, monthly rent, and weekly advertisement pictures are fixed as they don't vary with output. Hourly wages for an office employee can vary (e.g., more hours worked = higher cost).

Answer:

Hourly wages for an office employee