Final answer:
The object with four wheels but no steering wheel cannot be a car, as all cars have a steering wheel by definition. The reasoning involves deductive logic, concluding that the object is not a car.
Step-by-step explanation:
Based on the premises provided: Some objects with four wheels are cars; all cars have a steering wheel; this object has four wheels but no steering wheel; we can utilize logical reasoning to arrive at a conclusion. The object in question cannot be a car because it lacks a steering wheel, which is a defining feature of all cars, as given in the second premise. Therefore, the correct answer is option b: this object is not a car. This reasoning is grounded in the basic principles of logic, specifically deductive reasoning. The object may be another type of four-wheeled vehicle that does not require a steering wheel, such as a wagon or a cart, but it definitively cannot be a car.