The correct answer is 8 bits.
Eight bits make a bye. A bit is a binary digit, and it is the smallest unit of storage on a computer. Bits are so little that they can only hold values of either 0 or 1 (on or off).
A byte is a total of 8 bits. It takes 8 bits which is equal to a byte to store a letter on a computer. Other units of storage include:
A nibble is made up of 4 bits. A Kilobyte is a made up of 1,024 bytes. A megabyte is equivalent to 1,048,576 bytes or about 1,024 kilobytes. Others include Gigabyte, terabyte, petabyte, Exabyte, zettabyte, yottabyte, and so on.