Final answer:
The intended audience is politicians considering legislation to amend the driving age.
Step-by-step explanation:
The intended audience in this question is politicians considering legislation to amend the driving age. The language used in the opening of the letter suggests that the writer wants to address lawmakers and influence their decision regarding the driving age. The letter expresses a strong opinion about raising the driving age and includes specific conditions that should be met for teenagers to obtain a driver's license.