Meaning: 'Processes' refers to a series of actions or steps taken to achieve a particular end, in this case, the bodily functions that require water.

Wrong options:

• procedures: 'Procedures' implies a specific method or way of doing something, which does not encompass the broader range of bodily functions mentioned.
• methods: 'Methods' suggests a systematic way of doing something, but it is less inclusive than 'processes' in this context.
• developments: 'Developments' refers to the process of developing or being developed, which does not relate to the bodily functions that involve water.

Correct answer: remove

Explanation: The verb 'remove' is appropriate here as it indicates the action of taking away thirst, fitting grammatically and contextually with the sentence's focus on bodily needs.

Meaning: 'Remove' means to take something away or eliminate it, in this case, referring to quenching thirst.

Wrong options:

• confiscated: 'Confiscated' implies taking something away, usually by authority, which does not fit the context of satisfying thirst.
• eliminated: 'Eliminated' suggests completely getting rid of something, which is too strong for the context of quenching thirst.
• add: 'Add' implies increasing or including something, which contradicts the action of addressing thirst.

Correct answer: required

Explanation: The word 'required' fits grammatically as it indicates necessity, aligning with the context of water being essential for life. It is a strong adjective that conveys the importance of water for all living beings.

Meaning: 'Required' means something that is necessary or needed, emphasizing that water is crucial for survival.

Wrong options:

• compulsory: 'Compulsory' suggests something that is mandatory, which is too formal and does not match the tone of the sentence.
• essential: 'Essential' also means necessary, but 'required' is more commonly used in this context, making it a better fit.
• obligatory: 'Obligatory' implies a duty or requirement, which does not convey the same sense of necessity as 'required' in this context.

Correct answer: happen

Explanation: The verb 'happen' is suitable here as it indicates an occurrence or event, fitting grammatically and contextually with the inquiry about the consequences of water scarcity.

Meaning: 'Happen' means to occur or take place, referring to the potential outcomes of a lack of drinking water.

Wrong options:

• occurs: 'Occurs' is a synonym for 'happen' but is less commonly used in this interrogative context, making 'happen' a more natural choice.
• made: 'Made' implies creation or manufacture, which does not fit the context of discussing events or outcomes.
• come: 'Come' does not convey the same meaning of occurrence as 'happen' and is grammatically awkward in this context.

Correct answer: finished

Explanation: The word 'finished' fits grammatically as it indicates the state of being used up, aligning with the context of water availability. It is a past participle that describes the condition of drinking water.

Meaning: 'Finished' means to be completely used up or no longer available, referring to the depletion of drinking water.

Wrong options:

• refined: 'Refined' suggests a process of purification, which does not relate to the state of water being depleted.
• over: 'Over' does not convey a clear meaning in this context and is grammatically incorrect as it does not fit the structure of the sentence.
• come: 'Come' does not fit grammatically or contextually, as it does not describe the state of water availability.