42. What is the best definition of efficient as used in the third paragraph?

Answer: A

Explanation:

Efficient is defined as productive without waste.

In the context of the third paragraph, efficient refers to the ability of chopsticks as a tool to allow for effective food consumption with minimal waste, illustrating their utility in the eating process.

A) Productive without waste

This option accurately captures the essence of the term efficient as it applies to chopsticks, which are designed to allow users to consume food effectively while minimizing waste. The extract emphasizes the effectiveness of chopsticks in facilitating food consumption, aligning perfectly with this definition.

B) Cost-effective

Although cost-effectiveness can imply efficiency in a financial sense, it does not directly relate to the context of food consumption discussed in the extract. The focus here is on the utility and effectiveness of chopsticks rather than their economic value, making this option incorrect.

C) Performing well with minimal effort

While this option suggests a form of efficiency, it does not align closely with the context provided in the extract. The emphasis is on the productivity of the tool in consuming food rather than the effort required to use it, making this definition less relevant.

D) Optimal use of resources

This option implies a broader interpretation of efficiency that may include various types of resources, but it does not specifically address the context of food consumption as described in the extract. The focus on waste reduction is more pertinent, making this choice incorrect.

Conclusion

The definition of efficient as "productive without waste" is the most accurate in the context of the third paragraph, as it highlights the primary function of chopsticks in enabling effective food consumption. Other options fail to capture the specific aspect of waste reduction that is central to the discussion of food tools, thereby reinforcing why option A is the correct choice.