A Local Realtor Is Interested in Putting Up a Billboard

Multiple Choice

A local realtor is interested in putting up a billboard to advertise her services. She wants the visual acuity of the sign to be high. Which of the following would increase the visual acuity of the text?

A) Making the letters smaller, so more text falls on the center of the fovea.
B) Using black text on a plain white background.
C) Placing the sign on a dimly lit street to reduce the luminance.
D) Placing the sign far from the road so that it encompasses 5° of visual angle.