Select the topic sentence.

1what is amnesia? 2most of us think of a dramatic, total loss of memory brought on by a severe blow to the head. 3amnesia is, however, a very subtle, and sometimes sinister, illness. 4while amnesia can result from a head injury, overwork and worry can also lead to memory lapses. 5in some cases, diagnosis is difficult because these lapses are intermittent, rather than constant.
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Ineed . identify the item that shows sharp and vivid details rather than vague and general ones (put a or b for your answer.) a. nearly all people at times suffer from depression, which can be triggered by something as small as a c-minus on a quiz. they may become so depressed that they can’t even answer the phone or get out of bed. b. nearly all people feel sad at times and think things are hopeless. depressed by some event or circumstance, they may be unable to perform even the simplest activities they normally do every day.