Concept:The first computer that was produced and sold for commercial and business use was the UNIVAC I.
Explanation:UNIVAC stands for Universal Automatic Computer.
It was the first electronic digital computer designed for commercial purposes.
The UNIVAC I was delivered to the United States Census Bureau in 1951.
Before UNIVAC, machines like ENIAC and Mark-1 were built mainly for military or research tasks, not for sale to businesses.
EDSAC was an early stored-program computer, but it was not the first commercially available computer.
Therefore, UNIVAC is the correct answer.
Answer:A. UNIVAC