Answer:
Conceptual design is the first stage that involves defining a concept.
Explanation:
In the conceptual design phase it is important to understand the needs, doing research and find out how to meet them defining models and plans. In this stage, you have to define the steps you will need to take to develop the design and identify the challenges you may face in order to be prepare.
That is encryption. Encrypted files usually have a password assigned. In order to decrypt the file, you need to have the password.
Answer:
a blog
Explanation:
a forum is for questions, a wiki doesn't make sense in this situation and email wouldn't be used for this either so it should be a blog
1. George Eastman's film, which was used for early motion pictures,
2. Polaroids instant film, which after being removed from the camera would dry and reveal a picture.
I hope this helps, I had to research these :)
