Meaning: 'Declining' refers to a decrease or reduction in something, in this case, business.

Wrong options:

• insensibility: Insensibility refers to a lack of awareness or responsiveness, which does not relate to business performance.
• inability: Inability refers to the lack of capability to do something, which does not fit the context of business performance directly.
• disappointed: Disappointed is an adjective describing a feeling of dissatisfaction, which does not describe the state of business.
• descending: Descending is a gerund that implies moving downwards, which does not accurately describe the state of business in this context.
• threatened: Threatened is a past participle that implies danger or risk, which does not fit the context of business performance.

Correct answer: inability

Explanation: The term 'inability' is a noun that indicates a lack of capability to respond to market changes. It fits grammatically and contextually as it describes a reason for the failure of theme parks.

Meaning: 'Inability' refers to the lack of ability or capacity to do something.

Wrong options:

• insensibility: Insensibility does not relate to the capacity to respond and is not a noun that fits the context.
• declining: Declining is a verb form that does not fit as a noun in this context.
• disappointed: Disappointed is an adjective and does not serve as a noun to describe a lack of capability.
• descending: Descending is a gerund that does not relate to the ability to respond and does not fit grammatically.
• threatened: Threatened is a past participle that does not describe a lack of ability and does not fit the context.

Correct answer: disappointed

Explanation: The word 'disappointed' is an adjective that describes the feelings of visitors who are not satisfied with the service quality. It fits grammatically and contextually as it explains the reaction of visitors to the theme park's offerings.

Meaning: 'Disappointed' refers to the feeling of dissatisfaction when expectations are not met.

Wrong options:

• insensibility: Insensibility is a noun that does not describe a feeling of visitors and does not fit the context.
• inability: Inability is a noun that refers to a lack of capability, which does not describe visitor feelings.
• declining: Declining is a verb form that does not describe the emotional state of visitors.
• descending: Descending is a gerund that does not relate to visitor satisfaction and does not fit grammatically.
• threatened: Threatened is a past participle that implies danger, which does not describe visitor feelings.