Study every day and download apps like doulingo. It worked for me and I used to have disorders too.
The correct answer is Written Communication.
Written business communications are printed messages<span>. Examples of written communications include memos, proposals, e-mails, letters, training manuals, and operating policies. They may be printed on paper, handwritten, or appear on the screen. Normally, a verbal communication takes place in real time. </span>
For Translation
Many streams/rivers are contaminated. It is sad.
Answer:
"आस्तीन का सांप" मुहावरे का अर्थ धोखेबाज होना हे।