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.

• • Fannie May Salter was the lighthouse keeper at Turkey Point Light in Maryland.

• • She held this position for twenty-two years (1925-1947).

• • Ida Lewis was the lighthouse keeper at Lime Rock Light in Rhode Island.

• • She held this position for fifty-four years (1857-1911).

The student wants to compare the length of time Fannie May Salter and Ida Lewis worked as lighthouse keepers. Which choice most effectively uses relevant information from the notes to accomplish this goal?

• A.

  From 1925 to 1947, the nighttime waters of Maryland were more navigable thanks to lighthouse keepers Fannie May Salter and Ida Lewis.

• B.

  Fannie May Salter worked as a lighthouse keeper for twenty-two years, but Ida Lewis did so for even longer: fifty-four years.

• C.

  Fannie May Salter and Ida Lewis were both lighthouse keepers at a time when such a person was needed to operate a lighthouse.

• D.

  Before automation, lighthouse keepers like Fannie May Salter, who served for twenty-two years, and Ida Lewis were crucial to ensuring safe navigation for watercraft.