Answer:
Parity Bit
Explanation:
Given that Parity bit is a form of strategy or method that utilizes a scheme in adding a solitary bit to a binary string. This can be either 1 or 0, thereby making the total quantity of bit to become either odd parity bit or even parity bit during storage.
Hence, the technique that uses a scheme to sum the individual digits in a number and stores the unit's digit of that sum with the number is called PARITY BIT.
Answer is Phishing
Phishing is fraudulent and it attempts to steal your personal information through unscrupulous websites. A phishing website tries to steal private and sensitive information by tricking the user into believing that he/she is on legitimate website. You could easily land into a phishing website by mistyping a web address. It mainly comes through malicious links attached to an email, IM, or text messages. Do not be duped or fall victim to such links.
It could be a mix between A and C but the answer also could be with D of what I know of since Computer engineering could make the field of electrical engineering in sight , adding to it some designing skills.