The answer to your question would be option B. This would construct the sentence into, "Jonathan was not particularly hungry; he spent the meal picking at the food on his plate".
Pneumonoultramicroscopicsilicovolcanoconiosis
The longest word in any of the major English language dictionaries is pneumonoultramicroscopicsilicovolcanoconiosis, a word that refers to a lung disease contracted from the inhalation of very fine silica particles, specifically from a volcano; medically, it is the same as silicosis.
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