The Eggs of the Ascaris Lumbricoides Worm Are Ingested and Hatched

The eggs of the Ascaris lumbricoides worm are ingested and hatched in the duodenum, penetrate the intestinal wall, and migrate to the hepatic portal circulation.Its geographic distribution and infection rate are associated with:

A) institutional crowding.
B) poor sanitation.
C) day care centers.
D) moist warm soil.