What Does the Letter D Represent in the Formula

question 58

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What does the letter D represent in the formula   ?

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Definitions:

Insecure Website

A website that does not use encryption to protect the data being exchanged, making it vulnerable to cyber threats.

Comparison Shopping

The act of comparing prices and features of similar products or services before making a purchase decision.

Price Comparisons

The act of evaluating the prices of similar products or services from different vendors or stores.

Online Classified Ads

Web-based advertisements placed on specialized platforms that allow users to buy, sell, or trade goods and services.