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The answer is "use a dark background if your font is light colored." Letter b).
It's necessary to garantee that the slides will be clearly seen.
You use ice to cool down your drinks, and ice is a mineral?
Answer: Data storage enable a browser to have the Web Storage capabilities to easily enable the default with the IT administrator disabled such features and also clear quite exciting features.
Explanation: guessed
Answer:
Los humanos interactúan con las computadoras a través de una interfaz de usuario
Answer:
What sources? WILL ANSWER in comments
