Answer :
Final answer:
The VTEC system in Honda engines switches camshaft profiles almost instantaneously, usually in less than a second, when the correct conditions are met.
Explanation:
The VTEC (Variable Valve Timing and Lift Electronic Control) system in Honda engines allows for a rapid switch between low-speed and high-speed camshaft profiles, optimizing engine performance. Although the provided choices (a-d) refer to rates of rotation (revolutions per second), they do not directly answer the question. In reality, the transition in a VTEC engine occurs almost instantaneously, typically in less than a second, provided that the engine is within the correct range of RPM and other conditions such as oil pressure are met. The switch can be so quick that it is virtually seamless to the driver, allowing for improved acceleration and efficiency without manual interaction.
