Answer

The Jewish calendar is kept roughly synchronized with a solar calendar by

A) having a thirteenth month with 5 days each year.
B) adding a thirteenth lunar month to 7 out of every 19 years.
C) having the first lunar month begin on the spring equinox.
D) skipping a month every 7 out of 19 years.
E) having the first lunar month begin on the summer solstice.


B