Answer:
Computer is called versatile and diligent device because it is used in almost all the fields for various purposes and it can perform the task repeatedly without loosing its speed and accuracy for long time.
Not 100% sure but I can Definitely say not b or c. So you’re narrowed down to A and D.
Answer:
If it is just one letter, use a character, but if it is more than one letter, use a string (string of characters)
