Discussion
Why is benzene's absorption weaker than anthracene's?
Answer: B
Anthracene's three fused rings give a much larger conjugated system, which both lowers the transition energy and raises the transition probability, so its bands are further to the red and far more intense. Benzene absorbs at shorter wavelength, not longer, and solvent and spin are not the reason. That extending conjugation moves a band on both axes at once - bathochromic and hyperchromic together - is the general pattern for these systems. A limit that survives making every external component ideal is an intrinsic one, and worth knowing for that reason.
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