Choose the option that is nearest in meaning to the word or phrase underlined. She is anxious about her son who has been ill.

The word anxious refers to a feeling of worry or nervousness, typically about an imminent event or something with an uncertain outcome. When someone is anxious, they are not calm or assured; rather, they are concerned about a possible problem or risk.

Let's examine the given options:

• Perturbed: This means feeling disturbed, troubled, or unsettled, which closely aligns with being anxious, as both terms involve a state of apprehension or unease.
• Sure: This means being confident in one's knowledge or ability. It suggests certainty and is the opposite of feeling anxious.
• Confident: This means having faith or strong assurance in something, which contrasts with feeling anxious because it suggests a lack of worry.
• Certain: This implies having no doubt about something, which is also contrary to being anxious, as it indicates sureness rather than worry.

Therefore, among the options, the word perturbed is nearest in meaning to anxious, as both convey a sense of worry and unease.