Final answer:
Clipless pedals are the best option for Donovan, as they secure the rider's shoes to the pedals for improved power transfer and efficiency when cycling for speed the correct option is b.
Step-by-step explanation:
For Donovan, who wants to cycle for speed and is looking for the most efficient pedals, the best choice would be clipless pedals. Despite the name, clipless pedals allow a cyclist's shoes to fasten directly to the pedal mechanism, which provides a secure attachment. This secure connection allows for improved efficiency in power transfer from the rider to the bike because it allows force to be applied on both the upstroke and downstroke.
Additionally, clipless pedals can improve a cyclist's control over the bike, which can contribute to better overall performance, especially at high speeds.
While clips, adhesives, and flats are other forms of pedal attachment, they either do not offer the same level of efficiency or are not practical for performance cycling. Clip-on pedals were the precursor to clipless and involve straps and cages that secure the foot but are generally less efficient.
Adhesive pedals are not commonly used in cycling and would be impractical for performance due to the difficulty of engaging and disengaging the foot. Flat pedals are simple platforms that do not secure the shoe to the pedal, making them less efficient for speed cycling due to the lack of upstroke contribution and power transfer.