Final answer:
The question asks for the size of the image of the print on the retina when a book is held 30.0 cm from the eye, which is a Physics optics problem, but it cannot be solved without additional information about the eye's lens properties.
Step-by-step explanation:
The question doesn't relate to aggregate sizes used in any test method, but instead asks about the size of the image of print text on the retina. This falls under the subject of Physics, particularly optics, as it involves understanding how images are formed by the human eye, which is an optical instrument.
The print in many books averages 3.50 mm in height. To find out how high the image of the print is on the retina when the book is held 30.0 cm from the eye, we would need to use the lens formula and information about the eye's lens properties; however, since no specific lens formula is provided within the question, we cannot provide a solution. Physics problems like these often assume a simplified model of the eye and use geometrical optics to determine the size of the image formed on the retina.