Meaning: 'Worth' refers to the value or importance of something, especially in terms of money or resources.

Wrong options:

• plenty: 'Plenty' refers to a large amount or abundance, which does not fit the context of measuring economic output.
• money: 'Money' is a general term for currency and does not specifically convey the concept of value in this context.
• value: 'Value' is a synonym for worth but does not fit grammatically as it would require a different structure in the sentence.

Correct answer: relative

Explanation: The term 'relative' is appropriate as it describes the shares of fossil-based and fossil-free sources in comparison to each other, fitting the context of discussing proportions in the energy mix.

Meaning: 'Relative' means considered in relation or in proportion to something else, which is relevant when discussing shares of energy sources.

Wrong options:

• relevant: 'Relevant' means closely connected or appropriate, but it does not fit the context of shares which are being compared.
• similar: 'Similar' implies likeness but does not convey the idea of proportion or comparison needed here.
• communal: 'Communal' refers to something shared by a community, which does not relate to the context of energy shares.

Correct answer: address

Explanation: The verb 'address' is suitable as it means to deal with or discuss a particular issue, which is the intent when referring to climate change in this context.

Meaning: 'Address' means to speak about or deal with a problem or issue, particularly in a formal context.

Wrong options:

• outline: 'Outline' means to give a brief summary or overview, which does not convey the action of tackling an issue like climate change.
• point: 'Point' can mean to indicate or direct attention to something, but it lacks the nuance of actively dealing with a problem.
• highlight: 'Highlight' means to emphasize or make something stand out, which does not imply the action of resolving or addressing an issue.

Correct answer: nonetheless

Explanation: The word 'nonetheless' serves as a discourse marker indicating contrast, fitting well in the context of presenting a surprising fact despite previous statements about economic growth.

Meaning: 'Nonetheless' means in spite of that; nevertheless, indicating that the following statement is surprising or contrary to expectations.

Wrong options:

• thus: 'Thus' indicates a conclusion or result, which does not fit the context of presenting a contrasting idea.
• thereby: 'Thereby' means as a result of that, which does not convey the contrast intended in this context.
• also: 'Also' indicates addition, which does not align with the contrasting nature of the statement.

Correct answer: with

Explanation: The preposition 'with' is appropriate as it indicates the relationship between economic growth and finite resources, fitting grammatically and contextually in the sentence.

Meaning: 'With' indicates association or connection, which is necessary to express the relationship between economic growth and resources.

Wrong options:

• over: 'Over' implies a position above something, which does not fit the context of discussing compatibility.
• within: 'Within' suggests being inside or contained by something, which does not accurately convey the relationship intended here.
• by: 'By' indicates the means of achieving something, which does not fit the context of discussing compatibility.