I’d go with b. egotistical, i’m not entirely sure though. It seems like he is trying to appeal to the suspects EGO
Answer: Insertion steganography
Explanation: Insertion steganography is the way of encrypting the data with the help of a regular files and message. It is encrypted by the ordinary files because the identification of files can be neglected. This process is carried out just for the protection purpose in extra form and gets decrypted in the destination port .It has the working based on the replacement of the bits in a file .
<span>A chipset which forms an interface between the CPU's front-side bus, main memory, and peripheral buses. Non-volatile memory chips (usually Flash ROM in modern motherboards) containing the system's firmware or BIOS. A clock generator which produces the system clock signal to synchronize the various components.</span>
Oh a document, I do not believe that you have type on images, but if you were to type a text in a app called PicsArt and saved it and then put it onto the document over the picture it would work.
Explanation is in the file
tinyurl.com/wpazsebu