What does a limited slip differential primarily enable?

A limited slip differential primarily enables the transfer of power to the wheel with the most traction. This mechanism is vital in scenarios where one wheel may lose grip, such as during acceleration on slippery surfaces or when cornering. By directing power to the wheel that has better traction, the limited slip differential helps maintain vehicle stability and control, preventing excessive wheel spin.

In contrast, the other options describe features that are not characteristic of a limited slip differential. For instance, having both wheels rotate at the same speed regardless of traction would lead to traction issues on uneven surfaces, which is not the intention of a limited slip differential. Locking the wheels together for maximum traction is typically a feature of a locking differential, not a limited slip. Lastly, improving vehicle speed on straightaways is more closely associated with overall vehicle design and aerodynamics rather than the specific functionality of a limited slip differential.