Answer the following question: Q: A circuit must be what in order for electric devices such as light bulbs to work? Read this paragraph and choose the correct option from the provided answers: A circuit must be closed for electric devices such as light bulbs to work. The arrows in the diagram show the direction in which electrons flow through the circuit. The current is considered to flow in the opposite direction. Choices: - open - down - cyclical - closed A:
Answer:
closed