The correct answer is B) The British won by using scorched-earth tactics.
The Boer Wars, particularly the Second Boer War (1899-1902), ultimately ended with a British victory. The British implemented scorched-earth tactics, destroying Boer farms and resources and using concentration camps to manage civilian populations, which significantly weakened the Boer resistance. The combination of these tactics and the British's ability to leverage their superior numbers and resources led to their victory in the conflict.