Answer:
Option a is the correct answer for the above question.
Explanation:
The compress techniques are used to encrypt the file and convert a larget file into a small one. This is used by some compression software. The above question asked about the method by which the receiver email memory is less used when anyone sends the document to him. It is used by the compression techniques. When the sender compresses the file then the receiver memory is less used. So the Option a is the correct answer for the above question while the other is not because:-