Explanation:

- The sentence refers to workers who returned somewhere during a lockdown and did not go back to work afterward.

- Option 1: Hope is not a correct fit. "Hope" is an abstract noun and doesn't refer to a physical place where someone can return.

- Option 2: House would refer to a specific type of building, but generally, people return "home" rather than "house."

- Option 3: Office doesn't fit because the workers would not be returning to their office during a lockdown.

- Option 4: Home refers to the dwelling where someone lives. It is the natural choice to describe returning to one's place of residence during a lockdown.

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