Read the section "What To Expect."
Which sentence from this section supports the conclusion that one must prepare to view a solar eclipse safely?
A
Full solar eclipses happen every year or two or three.
B
The last time totality crisscrossed the U.S. was in 2017.
C
After April, a total solar eclipse won’t happen here again until 2045.
D
When watching the eclipse, be sure to use eclipse-viewing glasses.
D
When watching the eclipse, be sure to use eclipse-viewing glasses.