Select the correct answer.ENIAC was the first instance of what? A. maglev trains B. GPS devices C. robotics D. electronic computers

The correct answer is D. electronic computers.

ENIAC, which stands for Electronic Numerical Integrator and Computer, was the first general-purpose electronic digital computer. Developed during the 1940s, it was designed to solve complex numerical calculations and perform a wide range of tasks. Unlike previous computing devices, which either used mechanical components or were limited in their programmatic capabilities, ENIAC was fully electronic, allowing for much faster processing speeds.

It consisted of over 17,000 vacuum tubes and was able to execute thousands of calculations per second, paving the way for modern computing. ENIAC's introduction marked a significant milestone in the evolution of computers, moving away from analog and mechanical systems to digital processing, which is foundational to today's technology landscape.