In the Microsoft publisher application (as well as many other websites such as Brainly, Google docs, etc), words underlined in red are spelled incorrectly.
Whether you spelled it incorrectly or did not complete the words, as long as the word is not found in the dictionary, the word would be underlined with a red squiggly line.
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Precision, specificity is related to the accuracy of the information with respect to the subject at hand. Precision is the only answer that makes sense.
It is a number that is expressed in the binary numerical system
Since no answer choices, have to deduce it is Private Networks
Apple uses social media to promote their products and increase user-engagement. This is a very effective method of advertising.