What measures has the UK implemented to protect the use of cash?

The correct answer is B, as the UK has indeed established cash access recommendations following an independent review. This initiative reflects the government's recognition of the importance of cash in the economy and its commitment to ensuring that everyone has adequate access to cash services. The recommendations outlined in the review aim to address the challenges faced by individuals, especially those in vulnerable groups, in accessing cash and ensure that cash remains a viable option for transactions.

The significance of this measure lies in its proactive approach to protect the use of cash amidst the rising popularity of digital payments. It acknowledges the need for a balanced payment ecosystem where cash can coexist with digital methods, thus catering to various consumer needs and preferences.

In contrast, other options suggest measures that do not align with the current policies or objectives related to cash usage. Ensuring that all businesses accept cash might not be feasible or necessary, as many businesses are transitioning to digital formats to enhance efficiency. Promoting digital payments exclusively contradicts the very essence of protecting cash usage, while increasing taxes on cash transactions would likely discourage cash usage rather than promote it. Therefore, the independent review and subsequent recommendations specifically aim to safeguard cash access, highlighting the UK's balanced approach to payment options.