A.I. Explanation:

Correct answer: constant

Explanation: The word 'constant' fits grammatically as it describes a state of being that is unchanging, which aligns with the context of the sentence discussing the nature of the universe. It is an adjective that complements the subject 'nothing' effectively, indicating that there is no unchanging element in the universe.

Meaning: 'Constant' means something that does not change or remains the same over time, emphasizing the idea that everything in the universe is subject to change.

Wrong options:

• orthodox: 'Orthodox' refers to traditional or established beliefs, which does not fit the context of describing the nature of the universe.
• volatile: 'Volatile' implies instability or rapid change, which contradicts the idea of something being unchanging.
• cheap: 'Cheap' refers to low cost or inferior quality, which is irrelevant in the context of discussing the nature of the universe.

Correct answer: womb

Explanation: The word 'womb' is contextually appropriate as it symbolizes a place of origin or development, aligning with the idea that every shape born carries the potential for change. It fits grammatically as a noun that complements the phrase 'bears in its'.

Meaning: 'Womb' refers to the organ in female mammals where offspring develop, metaphorically suggesting that change originates from within.

Wrong options:

• heart: 'Heart' typically symbolizes emotion or centrality but does not convey the idea of development or origin as effectively as 'womb'.
• limb: 'Limb' refers to an arm or leg, which does not relate to the concept of bearing seeds of change in the same metaphorical sense as 'womb'.
• brain: 'Brain' denotes intellect or thought, which is not the intended metaphor for the origin of change in this context.

Correct answer: relevant

Explanation: The word 'relevant' fits grammatically as it describes the significance of Ovid's words in the context of change over time. It is an adjective that effectively conveys the importance of the statement in relation to the fossil record.

Meaning: 'Relevant' means closely connected or appropriate to the matter at hand, indicating that Ovid's words are significant when considering historical changes.

Wrong options:

• prevalent: 'Prevalent' means widespread or common, which does not accurately capture the significance of Ovid's words in this context.
• detached: 'Detached' implies a lack of connection or involvement, which contradicts the idea of Ovid's words being significant and meaningful.
• dominant: 'Dominant' suggests superiority or control, which does not align with the context of discussing the relevance of Ovid's observations.