A.I. Explanation:

Correct answer: extending

Explanation: The word 'extending' is a present participle that describes the action of the Kalahari Desert in relation to its size. It fits grammatically as it indicates an ongoing action that aligns with the context of describing the desert's vastness.

Meaning: Extending means to stretch out or cover a certain area.

Wrong options:

• composing: 'Composing' suggests creating or forming, which does not fit the context of describing the desert's size.
• order: 'Order' refers to arrangement or organization, which is unrelated to the physical extent of the desert.
• categories: 'Categories' implies classification, which does not apply to the description of the desert's area.
• drawing: 'Drawing' is a gerund that indicates pulling or attracting, which does not describe the desert's size or extent.

Correct answer: array

Explanation: The term 'array' refers to a wide range or variety, which accurately describes the diverse ecosystems found in the Kalahari Desert. It fits both grammatically and contextually as it conveys the idea of multiple types of ecosystems.

Meaning: Array means a range or variety of things.

Wrong options:

• order: 'Order' implies a specific arrangement, which does not capture the diversity of ecosystems present.
• landscapes: 'Landscapes' refers to the visible features of an area, but does not specifically denote the variety of ecosystems.
• home: 'Home' indicates a place of residence, which does not fit the context of describing ecosystems.

Correct answer: home

Explanation: The word 'home' serves as a noun that indicates a place where something lives or exists. In this context, it appropriately describes the Kalahari Desert as a habitat for various wildlife, fitting both grammatically and contextually.

Meaning: Home refers to a place where someone or something resides.

Wrong options:

• landscapes: 'Landscapes' refers to the physical features of the area, which does not convey the idea of a habitat.
• array: 'Array' suggests a variety, which does not fit the context of describing a place of residence for wildlife.
• drawing: 'Drawing' does not relate to the concept of habitat and is not a noun that describes a place.

Correct answer: drawing

Explanation: The word 'drawing' is a gerund that indicates the action of attracting or pulling in visitors. It fits grammatically and contextually as it describes the effect of the Kalahari's beauty on tourists.

Meaning: Drawing means attracting or pulling in.

Wrong options:

• landscapes: 'Landscapes' does not convey the action of attracting and is not a verb or gerund.
• home: 'Home' does not fit as it does not describe an action related to visitors.
• array: 'Array' does not relate to the action of attracting visitors and is not appropriate in this context.

Correct answer: landscapes

Explanation: The term 'landscapes' refers to the visible features of an area, which fits perfectly in the context of describing the Kalahari Desert's beauty. It is grammatically correct and aligns with the overall theme of the text.

Meaning: Landscapes refer to the physical features and scenery of a particular area.

Wrong options:

• home: 'Home' does not fit as it does not describe the physical features of the desert.
• array: 'Array' implies a variety, which does not specifically refer to the scenery or features of the desert.
• drawing: 'Drawing' does not relate to the physical features and is not appropriate in this context.