16Hit1600
Expression of IdeasEasyIntroducing a person to a general audience

Expression of Ideas practice question

While researching a topic, a student has taken the following notes: - Hedy Lamarr (1914–2000) was an Austrian-born film actress. - In 1942, with composer George Antheil, she patented a 'frequency-hopping' system to guide torpedoes without jamming. - The idea was not used until the 1960s. - Frequency hopping later underpinned Bluetooth and Wi-Fi.

The student wants to introduce Lamarr to readers who know her, if at all, only as an actress. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  1. A. Film star Hedy Lamarr (1914–2000) was also an inventor: in 1942 she and composer George Antheil patented a frequency-hopping system that later underpinned Bluetooth and Wi-Fi.Correct
  2. B. Hedy Lamarr was born in 1914.
  3. C. Frequency hopping underpins Bluetooth.
  4. D. George Antheil was a composer.

Answer: A. Film star Hedy Lamarr (1914–2000) was also an inventor: in 1942 she and composer George Antheil patented a frequency-hopping system that later underpinned Bluetooth and Wi-Fi.

The known role, the surprising one, and why it matters.

Why the other answers are wrong

B. Hedy Lamarr was born in 1914.
A date only.
C. Frequency hopping underpins Bluetooth.
Not about Lamarr.
D. George Antheil was a composer.
About Antheil.

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