Meaning: 'Covering' refers to the act of traversing or moving over a distance.

Wrong options:

• sheltering: 'Sheltering' is a gerund that implies seeking protection, which does not fit the context of movement on ice.
• favor: 'Favor' is a verb that means to prefer, which does not relate to the action of moving over distances.
• hanging: 'Hanging' is a gerund that suggests being suspended, which does not apply to the context of polar bears moving across ice.
• leaping: 'Leaping' is a verb that indicates jumping, which does not accurately describe the continuous action of covering distances.
• search: 'Search' is a noun that does not fit grammatically in this context, as it requires a verb form.

Correct answer: search

Explanation: The term 'search' serves as a noun that describes the act of looking for seals. It fits grammatically as it follows the preposition 'in' and aligns with the context of polar bears seeking food.

Meaning: 'Search' refers to the act of looking for something, in this case, seals.

Wrong options:

• sheltering: 'Sheltering' is a gerund that implies seeking protection, which does not fit the context of looking for seals.
• favor: 'Favor' is a noun that means preference, which does not relate to the action of searching for seals.
• hanging: 'Hanging' is a gerund that suggests being suspended, which does not apply to the context of searching for seals.
• covering: 'Covering' is a gerund that indicates traversing distances, which does not fit as a noun in this context.
• leaping: 'Leaping' is a verb that indicates jumping, which does not accurately describe the act of searching.

Correct answer: sheltering

Explanation: The word 'sheltering' functions as a gerund that indicates the action of seeking protection from the heat. It fits grammatically as it follows the comma and aligns with the context of polar bears finding refuge during warm months.

Meaning: 'Sheltering' refers to the act of seeking protection or refuge.

Wrong options:

• covering: 'Covering' is a gerund that indicates traversing distances, which does not fit the context of seeking protection.
• favor: 'Favor' is a noun that means preference, which does not relate to the action of seeking shelter.
• hanging: 'Hanging' is a gerund that suggests being suspended, which does not apply to the context of seeking shelter.
• leaping: 'Leaping' is a verb that indicates jumping, which does not accurately describe the action of sheltering.
• search: 'Search' is a noun that does not fit grammatically in this context, as it requires a gerund form.