Meaning: 'Spotted' means to notice or identify something, in this case, the detection of the omicron variant.

Wrong options:

• plotted: 'Plotted' implies a plan or scheme, which does not fit the context of identifying a variant.
• planted: 'Planted' suggests placing something in a specific location, which is not relevant to the identification of a virus variant.
• made: 'Made' is too vague and does not convey the specific action of identifying or discovering something.

Correct answer: poised

Explanation: The word 'poised' indicates that omicron is in a state of readiness to become the dominant variant. This fits both grammatically and contextually, as it describes the variant's potential future status.

Meaning: 'Poised' means being in a position to do something, suggesting that omicron is about to take over as the leading variant.

Wrong options:

• hosted: 'Hosted' implies providing a place for something, which does not apply to the context of a virus becoming dominant.
• havock: 'Havock' is a noun meaning widespread destruction, which does not fit grammatically or contextually in this sentence.
• rumbled: 'Rumbled' suggests a low sound or movement, which is not relevant to the context of a virus's status.

Correct answer: hobble

Explanation: The word 'hobble' fits grammatically as it suggests that vaccines may limit or impede the effectiveness against omicron. This aligns with the context of the sentence discussing the impact of the variant on health.

Meaning: 'Hobble' means to restrict or limit, indicating that vaccines may not fully protect against the omicron variant.

Wrong options:

• grumbled: 'Grumbled' means to complain quietly, which does not fit the context of how vaccines interact with a virus.
• mumbled: 'Mumbled' refers to speaking unclearly, which is irrelevant to the discussion of vaccine effectiveness.
• propelled: 'Propelled' means to drive or push forward, which contradicts the idea of vaccines potentially limiting effectiveness.

Correct answer: bracing

Explanation: The word 'bracing' fits grammatically and contextually, indicating that experts are preparing for the upcoming challenges posed by the variant. It conveys a sense of readiness for potential surges in cases.

Meaning: 'Bracing' means preparing oneself for something difficult or unpleasant, in this case, the expected rise in COVID-19 cases.

Wrong options:

• embracing: 'Embracing' suggests welcoming something, which does not fit the context of preparing for challenges.
• tracking: 'Tracking' implies monitoring, which does not convey the proactive preparation indicated by 'bracing.'
• torturing: 'Torturing' means causing severe pain, which is completely unrelated to the context of preparing for a health crisis.

Correct answer: taking

Explanation: The word 'taking' fits grammatically as it indicates that vaccinated individuals should be adopting precautions. This aligns with the context of the sentence, which emphasizes the need for safety measures.

Meaning: 'Taking' means to adopt or implement, suggesting that people should be proactive in their safety measures.

Wrong options:

• giving: 'Giving' implies providing something, which does not fit the context of adopting precautions.
• gathering: 'Gathering' refers to coming together, which contradicts the idea of taking precautions.
• managing: 'Managing' suggests controlling or handling, which does not convey the specific action of adopting safety measures.