Concept:Modern computers are more advanced in both processing speed and physical size compared to earlier computers.
Explanation:Earlier computers were built with bulky vacuum tubes and simple circuits.
As a result, they occupied large rooms and operated very slowly.
Modern computers use microprocessors and highly integrated chips.
These advancements make them extremely fast in executing instructions.
At the same time, components have been miniaturised, making the devices compact and portable.
Hence, the key improvements are greater speed and a much smaller size.
Answer:D. faster and smaller