Meaning: 'Derived' means obtained or received from a source.

Wrong options:

• coordinate: Coordinate is a verb that means to organize or arrange, which does not fit the context of energy sources.
• committed: Committed is an adjective that means dedicated or devoted, which does not relate to the concept of energy derivation.
• concerned: Concerned is an adjective that indicates worry or interest, which does not fit the grammatical structure or context of energy sourcing.
• plentiful: Plentiful is an adjective meaning abundant, which does not fit as it does not describe the action of obtaining energy.
• replenished: Replenished is a past participle that refers to restoring something, which does not fit as it does not describe the source of energy.

Correct answer: replenished

Explanation: The term 'replenished' is a past participle that indicates the ability of natural sources to restore themselves, fitting grammatically and contextually as it describes the rate at which renewable sources can be renewed compared to their consumption.

Meaning: 'Replenished' means restored or filled again, particularly in reference to resources.

Wrong options:

• coordinate: Coordinate does not fit as it refers to organizing rather than the restoration of resources.
• committed: Committed does not relate to the concept of resource renewal and is not grammatically appropriate here.
• concerned: Concerned does not fit the context of discussing energy sources and their renewal.
• plentiful: Plentiful describes abundance but does not relate to the action of restoring resources.
• derived: Derived refers to obtaining something from a source, which does not fit the context of renewal.

Correct answer: plentiful

Explanation: The word 'plentiful' is an adjective that describes the abundance of renewable energy sources, fitting grammatically and contextually as it emphasizes the availability of these resources around us.

Meaning: 'Plentiful' means existing in large amounts or abundant.

Wrong options:

• coordinate: Coordinate does not fit as it refers to organizing rather than describing abundance.
• committed: Committed does not relate to the availability of resources and is not grammatically appropriate here.
• concerned: Concerned does not fit the context of discussing the abundance of energy sources.
• replenished: Replenished refers to restoring resources, which does not describe their availability.
• derived: Derived refers to obtaining something from a source, which does not fit the context of abundance.

Correct answer: form

Explanation: The word 'form' is a verb that indicates the process of creation or development of fossil fuels, fitting grammatically and contextually as it describes how long it takes for these non-renewable resources to develop.

Meaning: 'Form' means to create or develop something.

Wrong options:

• coordinate: Coordinate does not fit as it refers to organizing rather than the process of creation.
• committed: Committed does not relate to the process of forming resources and is not grammatically appropriate here.
• concerned: Concerned does not fit the context of discussing the formation of energy resources.
• plentiful: Plentiful describes abundance but does not relate to the process of formation.
• replenished: Replenished refers to restoring resources, which does not describe the creation process.