Identify the aromatic hydrocarbon represented by two fused six-membered carbon rings sharing one common edge.

Explanation

Naphthalene consists of two fused six-membered aromatic carbon rings that share an edge, and has formula C₁₀H₈. Tropone contains a seven-membered carbonyl ring, cyclohexene a single non-aromatic ring, and tetrahydrofuran a saturated oxygen-containing five-membered ring.