Tech a says that the maintenance requirements of a vehicle have not changed since the creation of the automobile. tech b says that manufacturers are predicting 25,000-mile (40,000-km) intervals. who is correct?

Tech B

Explanation:

There is a revolution of changes occur since the beginning of vehicle creation. Many technology came into existence and proposed us the best design, features and model. But as a machine, several fatigue or wear and tear can happen to this hence a proper maintenance is required in order for smooth running of your vehicle.

Many manufacturers have booklet that mention the proper maintenance interval for better running of your vehicle. As daily environment is changing, the  maintenance requirements of a vehicle is also changing. New technology is bringing new features hence their maintenance  rate as well as requirement also needs to be upgraded.

answer: good job it's all correct !

explanation: