What was one advantage of using steam-powered locomotives in the 1800s?
a. locomotives were only used to transport cargo.
b. locomotives were only used to transport passengers.
c. locomotives relied on readily available horse power.
d. locomotives could carry more goods than carriages.
i think it is either d. or a. but not sure.
explain

i think the answer is a and i hope this ; ))

this forms a narrow, steep sided inlet (sometimes deeper than 1300 metres) connected to the sea. the terminal moraine pushed down the valley by the glacier is left underwater at the fjord’s entrance, causing the water at the neck of the fjord to be shallower than the main body of the fjord behind it.