Which of the following is NOT a requirement for Basic Operations?

The requirement concerning age specifies that a person must be at least 16 years old to obtain a Remote Pilot Certificate for drone operations under Part 107 regulations. Although 18 may be a common age for many certifications and licenses, it is not a requirement specific to basic drone operations. The other options are indeed requirements: maintaining visual line of sight is crucial for safety, adhering to the no alcohol or drugs policy reflects the importance of mental acuity while operating a drone, and the distance requirement from bystanders is in place to ensure public safety during drone flights. Thus, the statement regarding the age of 18 is not a valid requirement, making it the correct answer for this question.