Current-Sectional Chart Drill

Why: The dashed magenta ring around Millville Muni is the chart symbol for Class E airspace designated as a surface area (FAA-CT-8080-2H, Legend 1, p. 1-1) — meaning Class E reaches the ground right around the airport, not just above it. Because that's controlled airspace, 14 CFR § 107.41 requires ATC authorization before operating a small UA there.

• Class G never requires ATC authorization under § 107.41 — pairing "Class G" with "authorization is required" is self-contradictory, a good sign an option is wrong before you even check the chart.
• No Class B appears on this chart near Millville, and even where Class B genuinely exists, § 107.41 still requires authorization there too — so this option is wrong about both the airspace class and its own authorization claim.

Why: The chart marks 119.0 with the circled 'C' symbol next to GCN's tower frequency ('CT - 119.0'), and Legend 1 defines that circled C as the Common Traffic Advisory Frequency indicator (FAA-CT-8080-2H, Legend 1, p. 1-1). When the tower isn't staffed, that same frequency is what pilots use to self-announce.

• 124.3 is charted here as the ATIS frequency, not the CTAF — mixing up ATIS (a recorded weather/arrival broadcast) with CTAF (a frequency pilots transmit on) is one of the most common chart-reading mix-ups at towered fields.
• 122.95 isn't paired with the chart's circled C symbol either. The reliable tell for this kind of question is always the symbol next to the number, never which frequency merely sounds plausible for an airport.