Final answer:
Snacks are the most likely variable expense in the budget of a childcare facility as they can vary based on the number of children and their dietary needs.
Step-by-step explanation:
A variable expense is a cost that changes in relation to the activity level of a business. In the budget of a childcare facility, snacks are most likely the variable expense. The amount spent on snacks can vary depending on the number of children enrolled and their dietary needs. This expense can increase or decrease based on the demand for snacks.
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