Need help! I would really appreciate it

Which mode of public transport does this sentence describe? es muy largo y se mueve sobre rieles. a. un ferry b. un taxi c. un barco d. un tren

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Your parents want to buy house in another country so the family can spend the summer there. they like to look at a variety of choices, from tall buildings to small detached houses, two ranches. they prefer a vibrant big city. espaba guinea ecarorial argentina costa rica