Meaning: 'Signature' refers to a distinctive mark or characteristic that identifies someone or something, in this case, the unique style of Kusama's pumpkin sculptures.

Wrong options:

• signed: 'Signed' is a past participle that does not fit as it implies an action rather than a defining characteristic of her art.
• signal: 'Signal' is a verb that does not align with the noun form needed in this context, as it does not describe a feature of her work.
• synthesized: 'Synthesized' suggests a process of combining elements, which does not accurately describe the nature of her pumpkin sculptures.

Correct answer: skyrocketed

Explanation: The verb 'skyrocketed' conveys a rapid increase in success, fitting the context of Kusama's growing prominence in the art world over the past decade. It aligns with the grammatical structure of the sentence, indicating a change in her success level.

Meaning: 'Skyrocketed' means to rise or increase very quickly, indicating that Kusama's success has dramatically improved recently.

Wrong options:

• flourished: 'Flourished' implies growth but lacks the intensity of rapid increase that 'skyrocketed' conveys, making it less suitable in this context.
• discouraged: 'Discouraged' has a negative connotation and does not fit the positive context of her success.
• occupied: 'Occupied' suggests being busy or engaged, which does not relate to the concept of success or growth.

Correct answer: spans

Explanation: The verb 'spans' appropriately indicates the extent of time covered by the exhibition, fitting grammatically and contextually as it describes the duration of Kusama's artistic career. It aligns with the phrase 'seven decades,' indicating a range.

Meaning: 'Spans' means to extend across a certain period or area, in this case, referring to the duration of her artistic contributions over seven decades.

Wrong options:

• extends: 'Extends' implies a physical length or reach but does not convey the temporal aspect as effectively as 'spans.'
• vulgarizes: 'Vulgarizes' has a negative connotation, suggesting a reduction in quality or sophistication, which is inappropriate in this context.
• strains: 'Strains' suggests tension or difficulty, which does not fit the positive context of an exhibition celebrating her work.

Correct answer: Inspiration

Explanation: The noun 'Inspiration' fits grammatically and contextually as it refers to the source of creativity for Kusama's art. It aligns with the preceding context about her vulnerability and struggles, indicating what drives her artistic expression.

Meaning: 'Inspiration' refers to the motivation or influence that stimulates creative activity, in this case, the personal experiences that inform her art.

Wrong options:

• respiration: 'Respiration' relates to breathing and does not connect to the creative process or artistic motivation.
• transliteration: 'Transliteration' refers to converting text from one script to another, which is unrelated to the context of artistic inspiration.
• concentration: 'Concentration' implies focus or attention, which does not capture the essence of what drives her creativity as effectively as 'Inspiration.'