Answer :
Social media sites can provide a firm with insights into a consumer's opinions about the firm and the opinions about the firm from the consumer's neighbors.
How social media helps the firm to get the idea of trends?
Social media helps the company to get the trend and idea about the latest things going on in the world or the latest challenges going on the world. Everything which is happening on the country was on social media platform.
Thus, option B is correct.
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