Final answer:
The correct transponder code for VFR flight in Class E airspace is 1200, Mode A/3. Modes F and S are not used for general VFR flight, and 4600 is not a VFR squawk code unless assigned by ATC.
Step-by-step explanation:
The correct transponder code for a Visual Flight Rules (VFR) flight in Class E airspace is 1200, Mode A/3. When flying under VFR in Class E airspace, which is the controlled airspace that extends from around 1,200 feet above ground level up to but not including 18,000 feet mean sea level (MSL), it's standard practice to set the transponder to squawk code 1200. This is the universal transponder code used in the United States for aircraft not receiving air traffic control (ATC) services. Mode A refers to the transponder mode that reports the aircraft's squawk code, which is a four-digit octal number, whereas Mode C includes altitude-reporting capability. However, the question only asks about the squawk code, not altitude reporting, which is why Mode A/3 is appropriate. Option 1 is the correct answer as Modes F and S are not standard transponder modes for VFR flight in this context. Mode S is an advanced transponder system used mainly in controlled airspace with heavier traffic. Squawk 4600 is not a general VFR code and should not be used unless specifically assigned by ATC. It's important for pilots to set their transponders correctly to ensure proper identification and safety in the airspace system.