The nurse is teaching the family members of a school-age child how to accurately measure an oral temperature. What statement by the family member would indicate good understanding?

a) "I will place the thermometer under the child's tongue for 10 seconds."
b) "I will use an ear thermometer for a more accurate reading."
c) "I will take the temperature immediately after the child eats."
d) "I will ensure the child breathes through their mouth while measuring temperature."