Option A will only work if the sentence was "Each size of a pallet is approximately as large as the size of a refrigerator..."
Answer:
"Who is Sigmund Freud?"
Explanation:
According to my research on various psychologists, I can say that based on the information provided within the question I would most likely say "Who is Sigmund Freud?". This is because Sigmund Freud was the psychologist who developed an account of the unconscious mind by divided the mind into the conscious mind (or the ego) and the unconscious mind. He was also an individual who relied mainly on the case study methods for developing this account.
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Brackets. in quotes, square brackets show that the writer changed the original source. you might use them to change an ambiguous pronoun (such as "he" or "they") to a specific person or group (such as "abraham lincoln" or "school teachers"). they're also used to modify the phrasing of the original source to fit your sentence, such as changing a verb from from present tense to past tense.