Nhận biết (M1)

While researching a topic, a student has taken the following notes:

• • Lighthouses send out crucial light signals to help ships and other watercraft navigate at night.

• • Before automation, lighthouses were run by lighthouse keepers.

• • Elizabeth Riley was the lighthouse keeper at North Point Light in Maryland.

• • She held this position from 1834 to 1857.

• • Laura J. Hecox was the lighthouse keeper at Santa Cruz Light in California.

• • She held this position from 1883 to 1917.

The student wants to emphasize the order in which the two lighthouse keepers began their careers. Which choice most effectively uses relevant information from the notes to accomplish this goal?

• A.

  Before automation, lighthouse keepers like Elizabeth Riley and Laura J. Hecox were crucial to ensuring safe navigation for watercraft.

• B.

  Laura J. Hecox began her career as a lighthouse keeper years after Elizabeth Riley did.

• C.

  Elizabeth Riley’s career as a lighthouse keeper ended in 1857, whereas Laura J. Hecox’s ended in 1917.

• D.

  From 1834 to 1857, the nighttime waters of Maryland were more navigable thanks to lighthouse keepers Laura J. Hecox and Elizabeth Riley.