Final answer:
The corrected sentence is: "World-renowned chef Ferran Adrià once dramatically asserted, 'It takes an entire life just to know about tomatoes.'", with proper punctuation and capitalization, particularly placing the comma and period correctly in relation to the quotation marks.
Step-by-step explanation:
The sentence provided by the student contains capitalization and punctuation errors that need correction. The proper capitalization is already in place; however, the punctuation within the quotation is incorrect. According to the rules of American English, commas and periods should be placed inside the quotation marks. Therefore, the corrected sentence is: "World-renowned chef Ferran Adrià once dramatically asserted, 'It takes an entire life just to know about tomatoes.'" Note that the comma after 'asserted' sets off the introductory clause, and the period at the end of the sentence is correctly placed within the quotation marks.