OEThe 2- and 3-person households account for 36.3% + 16.5% = 52.8% of all households, so this is the correct answer. Quickly rule out the other choices as a check:
(B) The 3- and 4-person households account for 16.5% + 14.5% = 31.0% of all households.
(C) The 4- and 5-person households account for 14.5% + 6.7% = 21.2% of all households.
(D) The 5- and 6-person households account for 6.7% + 2.6% = 9.3% of all households.
(E) The 6- and 7-person households account for at most 2.6% + 1.8% = at most 4.4% of all households (remember that some of the 1.8% could consist of households with more than 7 people).
All of the choices other than (A) are less than 50%.
Answer: A