The passage discusses the progress made in AI for natural language processing, highlighting improvements in the machines' ability to understand and generate human language accurately. However, it also raises concerns related to the ethical aspects of AI use in this field. Specifically, the passage points out two key issues:
1. Privacy concerns — There is worry about how AI might handle or expose sensitive information while processing language data.
2. Potential misuse of language generation technologies — AI could be exploited to create misleading or harmful content.
These points collectively represent ethical challenges that are actively debated in the AI community.
Now, let's analyze the answer choices:
- (A) is incorrect because the passage states that AI has improved in understanding human language, so it is not "unable" to do so.
- (B) is incorrect since the passage claims AI is increasingly accurate in language generation, not lacking accuracy.
- (C) is the correct choice because it directly mentions the privacy and misuse concerns described in the passage.
- (D) is not mentioned as a concern in the passage; cost is not discussed.
Therefore, option C best captures the ethical concerns highlighted in the passage.