The answer for you question is this:
B)Schist
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Some of the earliest forms of customer service is goods and services would come to you. Peddlers went to houses, doctors did hours calls...etc
Bottom up is
Feature processing
Letter processing
Word processing
Phrase processing
Comprehension
Top down processing is just the opposite.
I believe the answer is...
A magnifying glass will create a larger, virtual image because the glass is made of a convex lens.