A.I. Explanation:

Option 1: "To introduce Wi-Fi on all public transport"

Explanation: While the text mentions that the new electric buses are equipped with Wi-Fi, this is a feature of the initiative rather than its primary goal. The main focus of the initiative is on reducing traffic congestion and improving air quality, not solely on providing Wi-Fi.

Option 2: "To reduce traffic congestion and improve air quality"

Explanation: This option accurately reflects the primary goal of the public transport initiative as stated in the text. The initiative aims to address traffic congestion and enhance air quality, which is explicitly mentioned as the main objective of the city council's efforts.

Option 3: "To provide free transport for all city residents"

Explanation: The text does not mention anything about providing free transport. Instead, it focuses on the introduction of electric buses and other measures to improve public transport, with no indication of free services being part of the initiative.

Option 4: "To become a leading tourist destination"

Explanation: This option is incorrect as the text does not discuss tourism or becoming a leading tourist destination. The initiative is centered around improving public transport and environmental goals, not tourism.