Final answer:
The minimum age requirements for various pilot licenses are: Student Pilot Permit (SPP) at 14 years old, Recreational Pilot Permit (RPP) at 16 years old, Private Pilot Licence (PPL) at 17 years old, and Commercial Pilot Licence (CPL) at 18 years old.
Step-by-step explanation:
The age requirements for different pilot licenses such as Student Pilot Permit (SPP), Recreational Pilot Permit (RPP), Private Pilot Licence (PPL), and Commercial Pilot Licence (CPL) vary according to regulations set by aviation authorities.
Student Pilot Permit (SPP): Requires the individual to be at least 14 years old.
Recreational Pilot Permit (RPP): Requires the individual to be at least 16 years old.
Private Pilot Licence (PPL): Requires the individual to be at least 17 years old.
Commercial Pilot Licence (CPL): Requires the individual to be at least 18 years old.
Therefore, based on the options provided (a) 14 (b) 16 (c) 17 (d) 18, corresponding age requirements for each license are SPP - 14, RPP - 16, PPL - 17, and CPL - 18.