According to grammar rules and most style books, you would hyphenate all compound numbers from twenty-one to ninety-nine. Therefore the correct answer is b, ninety-eight.
The popular method of branded entertainment that is specified would be the product placement wherein it <span>embeds brands as props within another programming, for example, television shows and movies. In addition, the method makes use of unconventional techniques of advertising the company's products.</span>
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What is air pollution ?
Air of a substance that has a harmful and/or poisonous effects.<span>
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Judging by those answer choices provided above, it is safe to say a phone dialer is not needed so we can exclude that from the problem. A milestone is like a huge discovery, which does not make too much sense here. Which leaves us with two semi correct answers. Both C and D. A to do list would be great, but you would need to organize what you will do for the entire week before making a to do list, which leaves you with your best option!
~Hope this helps!
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Joshua A. Bunn