Tuesday was a good day for vegetables — and San Franciscans who love them — as the city’s Board of Supervisors passed a nonbinding resolution declaring every Monday as “meat-free.” The resolution, sponsored by Supervisor Sophie Maxell, a vegetarian, urges restaurants, stores and schools to offer “plant-based options” every Monday to improve the general civic health. Ms. Maxwell tied the measure to the fight against global warning and said it would “encourage citizens to choose vegetarian foods as a way to protect the planet and their health.” The board also passed a nonbinding resolution commending businesses that use only cage-free eggs. Ms. Maxwell invited the entire board to her office “for a vegetarian treat.”