48.
Your Answer is
Correct Answer is G
Explanation
Here it means "beams of light illuminate the exterior of the White House..." so item G illuminate "illuminates" fits.
F item: enlighten "enlighten, enlighten", does not conform to the meaning of the sentence.
Item H: irradiate "radiation", does not conform to the meaning of the sentence.
Item J: inflame "burns, irritates", which does not conform to the meaning of the sentence.