Q: Which item found in the human body is smaller? \nOptions:\n- (A) the eyes\n- (B) Epidermis\n- (C) all matter\n- (D) Fingernail.\n- (E) Inches\n- (F) Baby tooth.\n- (G) Small eyelash.\n- (H) Neuron.
Let's think step by step below.

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Cells vary in size as well as shape, but all cells are very small. Neurons are cells that are similar to other cells. Neurons are very small in size.
Thus, the answer is (H).
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