Part A: State your claim as to whether or not the lichen is living.
A. The lichen is living.
Part B: Provide evidence to support your claim.
A. Cells are present in the lichen.
Part C: Explain how the evidence supports the claim.
A. The lichen is living because it is made of cells.
This claim, evidence, and explanation collectively support the assertion that lichen is a living organism, due to its cellular structure typical of living things.