A municipal transit authority has a fixed development budget to allocate between two critical infrastructure initiatives: 'Electric Bus Rapid Transit (eBRT) lines' and 'Subway expansion tracks'.
Draw a production possibility diagram representing the potential combination of these two transit options that the authority can construct. Assuming all available budget and planning resources remain fully and efficiently utilised, show on your diagram the opportunity cost of increasing the construction of Electric Bus Rapid Transit (eBRT) lines.
