Actually the answer is D. A is missing a comma. B is too. C shouldn't have a common after the word famous.
<h2>Answer :</h2>
<h3 /><h3>A. Goods and Services</h3>
<em>The inconsistency is: the writing states that the cell phones are a monumental distraction at school but it encourages its usage at the same time.</em>
According to the text, young peoples' attention should be focused on learning and the phones disturb the process. Therefore, they should be strictly forbidden at school. But there is no point in forbidding them, if using them to communicate with parents is seen as something positive and purposeful. This does not make any sense, this is double standards, the school should either allow the phones at school and not complain about them at all, or it should prohibit their usage without any exceptions such as communicating with parents or taking pictures with friends.
No, grandparents is a common noun, therefore you don't capitalize it. It would be different if you had the names of the grandparents. Like if your grandma is named Martha. You would have to capitalize their name since it is a proper noun
