Multiple choice

Directions: In which given year discovery/invention was made:

Bacteria

  1. 1867

  2. 1683

  3. 1955

  4. 1939

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

1683 is given as the correct answer for the discovery of bacteria. Antony van Leeuwenhoek first observed bacteria in the 1670s using microscopes, with 1683 being a commonly cited year for his bacterial observations. 1867 is too late, 1955 and 1939 are much too recent.

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