Certain brands of gardening tools have contributed to improving the living standards of people? What is the cause of this impact? A,promotion? B,effective distribution?

C, quality and durability of the tools.

The impact of certain brands of gardening tools on improving living standards is primarily due to the quality and durability of the tools. High-quality gardening tools are more efficient and effective in helping people maintain their gardens, leading to better yields and healthier plants. Additionally, durable tools require less frequent replacement, saving money in the long run. This, in turn, can lead to improved food security, increased access to fresh produce, and overall better living standards for individuals and communities. Promotion and effective distribution can also play a role in increasing access to these tools, but ultimately it is the quality and durability of the tools themselves that have the most significant impact on improving living standards.

B, effective distribution