The correct answer is: A. base64
Base64 is a method for encoding arbitrary binary data as ASCII text, to be used, for example, in an email body. It is a 6-bit encoding, which means that each 6 bits of binary data are encoded into one ASCII character. This allows binary data to be transmitted over channels that only support ASCII text, such as email.
Base64 is also used to encode data in files, such as images and PDFs. This allows the data to be stored in a smaller space, and it also makes it easier to transfer the data over the internet.
Base64 is a simple and efficient way to encode binary data as ASCII text. It is widely supported by software and hardware, and it is a good choice for a variety of applications.
Here are the other options and their descriptions:
- B. base56 is a 5-bit encoding, which means that each 5 bits of binary data are encoded into one ASCII character. This is less efficient than base64, as it requires more ASCII characters to encode the same amount of binary data.
- C. base78 is a 7-bit encoding, which means that each 7 bits of binary data are encoded into one ASCII character. This is even less efficient than base64, as it requires even more ASCII characters to encode the same amount of binary data.
- D. base90 is a 9-bit encoding, which means that each 9 bits of binary data are encoded into one ASCII character. This is the least efficient of the four options, as it requires the most ASCII characters to encode the same amount of binary data.