A.I. Explanation:

Option 1: "To preserve the city's heritage and promote community engagement"

Explanation: The text clearly states that the initiative aims to preserve the city's heritage and make the Old Mill a vibrant community space for cultural events and educational programmes. This aligns perfectly with the primary goal mentioned in the option, as it encapsulates both the preservation of heritage and the promotion of community engagement.

Option 2: "To create a new commercial centre in the city"

Explanation: This option is incorrect because the text does not mention any plans to create a commercial centre. Instead, it focuses on restoring the Old Mill for cultural and educational purposes, which contradicts the idea of a commercial centre.

Option 3: "To increase tourism by offering historical tours"

Explanation: While the restoration of the Old Mill may indirectly attract tourists, the text does not specify that increasing tourism or offering historical tours is a goal of the initiative. The primary focus is on preserving heritage and community engagement, making this option too narrow and not fully aligned with the text.

Option 4: "To convert the Old Mill into residential apartments"

Explanation: This option is incorrect as the text explicitly states the initiative is about restoring the Old Mill for cultural and educational purposes, not for residential use. Converting the Old Mill into apartments contradicts the main idea of preserving the site as a community space.