Which of the following is NOT a basic requirement for obtaining an Instrument Rating?

To obtain an Instrument Rating, candidates must have a valid private pilot certificate, as this serves as a prerequisite for more advanced training. Additionally, a medical certificate is necessary to ensure that the pilot meets the health standards set by the FAA to safely operate an aircraft. Completion of required flight training is also essential, as it provides the necessary skills and knowledge to operate under instrument flight rules.

A signed student pilot certificate, while important for beginning flight training, is not a requirement for obtaining an Instrument Rating. Instead, a valid private pilot certificate is the foundational document that signifies a pilot's authority and training level, allowing them to pursue further ratings such as the Instrument Rating. Thus, the signed student pilot certificate does not play a role in the final evaluation for the Instrument Rating.