Answer: C. Horizontal
Explanation:
Remember engine layouts are usually characterized on their cylinder layout, valves and camshafts.
Types of engines:
•In-line engines have it’s cylinders arranged in a row (ex. In-line 4)
•V-Type engines have it’s cylinder banks are arranged at an angle to each other, so that the banks form a "V" shape when viewed from the front of the engine.
•Horizontal/flat engines have it’s cylinders located on either side of a central crankshaft. (ex. Boxer engine)
•L-Type engines, I’m going to be real I’ve never heard of a L-type layout and I don’t think it’s real.