What performance aspect is primarily improved by data acquisition systems?

Data acquisition systems are primarily designed to collect and analyze performance data from various aspects of a vehicle during racing. Their main advantage lies in the ability to provide real-time feedback and detailed analysis of a car's performance metrics, such as lap times, tire temperatures, engine performance, and suspension behavior. This data allows teams to make informed strategy adjustments during the race, optimizing performance based on the conditions and driver feedback.

By analyzing the information gathered, teams can determine when to make pit stops, how to adjust tire strategies, and what modifications might be necessary to improve vehicle handling during different stages of a race. This capability to adjust tactics dynamically in response to real-time data significantly enhances a team's competitiveness on the track.

The other options, while related to performance, do not directly result from the primary function of data acquisition systems. Fuel efficiency relates to engine dynamics and tuning rather than data analysis. Driver reflexes are a function of the driver's skills and not something that can be measured or improved directly through data acquisition. Vehicle weight may impact performance, but modifying weight is a physical change rather than a strategy based on data analysis. Thus, the best answer highlighting the role of data acquisition systems is indeed the ability to enable strategy adjustments.