Question

in the 1930s and 1940s, actress hedy lamarr dazzled audiences as a glamorous hollywood star known for her beauty and charm. yet beyond the silver screen, lamarr had a brilliant, inventive mind. she pursued a passion for science, keeping equipment in her trailer and at home. while many of her inventions, like a glow-in-the-dark dog collar and a soda-making tablet, failed to gain traction, one stood out. during world war ii, she co-invented a frequency-hopping technology to prevent german u-boats from jamming allied radio signals. though unused in the war, this innovation laid the foundation for modern wireless communication, including wi-fi and bluetooth.

with her frequency-hopping design, lamarr revolutionized the film industrys approach to sound technology.
with her technological innovations, lamarr proved that she was as much a scientist as she was a film star.
with her lesser-known inventions, lamarr found creative ways to solve small challenges from her daily life.
with her inventive approach to performances, lamarr demonstrated that acting is both a science and an art.

Explanation:

The passage focuses on Hedy Lamarr's dual identity: a glamorous Hollywood star and a brilliant inventor, highlighting her key scientific innovation that laid the groundwork for modern wireless tech, alongside her lesser-known inventions. The correct concluding sentence should tie together her celebrity and scientific achievements. The first option is incorrect because her frequency-hopping tech did not impact film sound technology. The third option only addresses her small, lesser-known inventions, not her major impactful innovation. The fourth option is unrelated, as the passage does not discuss her acting approach as a science/art. The second option correctly summarizes her dual role as both star and scientist.

Answer:

With her technological innovations, Lamarr proved that she was as much a scientist as she was a film star.