Meaning: 'Extend' means to stretch out or reach further, suggesting that the philosopher's works cover a wide range of topics.

Wrong options:

• constrain: Constrain means to limit or restrict, which contradicts the idea of covering multiple fields.
• contain: Contain suggests holding something within, but does not convey the idea of reaching out to multiple fields as effectively as 'extend.'
• assemble: Assemble means to gather or put together, which does not fit the context of discussing the breadth of knowledge.

Correct answer: Moreover

Explanation: 'Moreover' serves as a discourse marker that adds information, indicating that the following statement builds on the previous one about the philosopher's works, fitting well in terms of logical flow and context.

Meaning: 'Moreover' means 'in addition' or 'furthermore,' used to introduce an additional point that supports the previous statement.

Wrong options:

• Rather: Rather implies a contrast or correction, which does not align with the additive nature of the sentence.
• So: So indicates a consequence, which does not fit the context of adding information about her writings.
• Likely: Likely suggests probability, which does not match the definitive nature of the statement about her writings.

Correct answer: value

Explanation: The word 'value' fits grammatically and contextually as it refers to the importance or worth of critical thinking, aligning with the emphasis of the philosopher's writings.

Meaning: 'Value' refers to the significance or importance of something, in this case, critical thinking.

Wrong options:

• waste: Waste implies something that is not useful or is discarded, which contradicts the positive emphasis on critical thinking.
• stake: Stake refers to a risk or investment, which does not fit the context of discussing the importance of critical thinking.
• engrave: Engrave means to carve or etch, which does not relate to the concept of importance or worth.

Correct answer: in which

Explanation: The phrase 'in which' correctly introduces a relative clause that describes the unique style, fitting grammatically and contextually to explain how ideas were blended together.

Meaning: 'In which' is used to specify the context or situation being described, indicating the manner in which ideas were combined.

Wrong options:

• in that: In that is used to provide a reason or explanation, which does not fit the context of describing a style.
• that: That is a relative pronoun but lacks the necessary preposition to indicate the context of blending ideas.
• which: Which is also a relative pronoun but does not provide the same contextual clarity as 'in which' in this sentence.