Question

how did steam locomotives lower the cost of transporting raw materials and finished goods?
○ they cost nothing to run because they ran on steam.
○ they could transport many materials or goods at once.
○ they were uncomplicated and inexpensive to build.
○ they were safe and cut the chance of costly accidents.

Explanation:

• Option 1: Steam locomotives required fuel (like coal) to produce steam, so they weren't free to run. Eliminate.
• Option 2: Steam locomotives had large carrying capacities, allowing transport of many materials/goods at once. This reduces per - unit transport cost, so this is correct.
• Option 3: Steam locomotives were complex machines with significant construction costs. Eliminate.
• Option 4: While safety is important, the primary way they lowered transport costs was through increased capacity, not just safety. Eliminate.

Answer:

B. They could transport many materials or goods at once.