It has been estimated that more than ____ of all elementary schools have an issue with mold, dust, or poor air quality that may lead to respiratory problems among students.
a. one-fifth
b. one-fourth
c. one-third
d. one-half
Question 2
The best type of light in early childhood education indoor environments is ___________ lighting.
a. LED
b. incandescent
c. natural
d. fluorescent