Meaning: In this context, 'hinges' means to depend on or be determined by something, suggesting that the effectiveness of the approach is closely tied to precision livestock farming.

Wrong options:

• places: The verb 'places' suggests positioning rather than dependence, making it contextually inappropriate here.
• turns: The verb 'turns' implies a change in direction or focus, which does not convey the idea of dependence required in this context.
• comments: The verb 'comments' does not fit grammatically or contextually, as it refers to expressing opinions rather than indicating dependence.

Correct answer: continuously

Explanation: The adverb 'continuously' describes the ongoing nature of data collection, fitting grammatically and contextually as it modifies the verb 'collect' to indicate that data is gathered without interruption.

Meaning: 'Continuously' means without stopping or interruption, indicating that the sensors are always collecting data on the animals' activities.

Wrong options:

• humorously: The adverb 'humorously' implies a comedic manner, which is irrelevant to the context of data collection.
• luminously: The adverb 'luminously' suggests brightness or light, which does not relate to the process of data collection in this context.
• gorgeously: The adverb 'gorgeously' implies beauty or attractiveness, which is not applicable to the functional aspect of data collection.

Correct answer: intervene

Explanation: The verb 'intervene' fits grammatically and contextually as it indicates that farmers will take action in response to detected health problems, aligning with the proactive nature of the sentence.

Meaning: 'Intervene' means to take action to improve a situation, especially in response to a problem, suggesting that farmers will act quickly when issues arise.

Wrong options:

• drive: The verb 'drive' implies control or operation, which does not convey the necessary action of responding to health issues.
• learn: The verb 'learn' suggests gaining knowledge rather than taking action, making it unsuitable in this context.
• spread: The verb 'spread' implies distribution, which does not relate to the context of responding to health problems.

Correct answer: driven

Explanation: The word 'driven' indicates that the expansion of precision livestock farming is motivated by external factors, fitting grammatically and contextually as it describes the influence of labor costs and demand on this approach.

Meaning: 'Driven' means motivated or propelled by certain factors, suggesting that the growth of this farming method is influenced by rising costs and demand.

Wrong options:

• defined: The verb 'defined' suggests establishing a meaning or boundary, which does not fit the context of motivation for expansion.
• covered: The verb 'covered' implies being included or protected, which does not convey the idea of being influenced or motivated.
• sponsored: The verb 'sponsored' suggests financial support, which does not align with the context of growth driven by market factors.