The correct answer is encyclopedia. A thesaurus is a book where you can find synonyms (words with the same meaning). An almanac is a text which is published yearly, and contains information about various things (usually the weather and crops). An atlas is a book where you can find information about the Earth and its countries. So the only option left is an encyclopedia - a book that contains information about all sorts of things.
Either A or B will benefit from a line graph, but if you the one that will benefit the most from a line it would be A.) Profits throughout the past 18 months.
