Meaning: 'Does' is used to indicate an action or state in the present tense, confirming that these systems actively utilize geothermal energy.

Wrong options:

• is: The verb 'is' suggests a state of being rather than an action, which does not fit the context of how the systems utilize energy.
• has: The word 'has' implies possession, which is not appropriate here as the sentence is about the action of using energy, not owning it.
• will: The word 'will' indicates future tense, which is not suitable since the sentence discusses current capabilities.

Correct answer: reach

Explanation: The verb 'reach' is the correct choice as it indicates the action of extending or going deeper into the Earth. It fits grammatically and contextually, as it describes the capability of enhanced geothermal systems to access heat at greater depths.

Meaning: 'Reach' means to extend or stretch out to a certain point, in this case, deeper into the Earth to access heat.

Wrong options:

• flow: The verb 'flow' suggests movement of a liquid or gas, which does not accurately describe the action of accessing geothermal heat.
• arrive: The verb 'arrive' implies reaching a destination, which does not fit the context of penetrating deeper into the Earth for heat.
• stretch: While 'stretch' indicates extending, it does not convey the specific action of accessing heat as effectively as 'reach' does.

Correct answer: matter

Explanation: The word 'matter' is the correct choice as it conveys the idea of importance or relevance in the context of location. It fits grammatically and contextually, indicating that the availability of geothermal energy is not dependent on where one is located.

Meaning: 'Matter' in this context means to be of importance or significance, emphasizing that location does not affect the use of geothermal energy.

Wrong options:

• case: The word 'case' does not fit contextually as it implies a specific situation rather than the general importance of location.
• location: The word 'location' is redundant in this context, as it repeats the idea already expressed in the sentence without adding new information.
• condition: The word 'condition' suggests a state or requirement, which does not align with the intended meaning of importance in this context.

Correct answer: fuel

Explanation: The word 'fuel' is the correct choice as it refers to substances used to produce energy. It fits grammatically and contextually, as the sentence discusses reducing reliance on fossil fuels in the context of energy production.

Meaning: 'Fuel' refers to materials that are burned or consumed to produce energy, particularly in the context of fossil fuels like oil and coal.

Wrong options:

• element: The word 'element' is too vague and does not specifically refer to energy sources, making it unsuitable in this context.
• impact: The word 'impact' refers to an effect or influence, which does not fit the context of discussing energy sources.
• proportion: The word 'proportion' refers to a part or share of a whole, which does not relate to the context of reducing fossil fuel usage.