Complete the sentence about Bulgarian yogurt with the correct year: Yogurt containing L. d. bulgaricus and S. thermophilus was first identified by the Bulgarian physician and microbiologist Stamen Grigorov in ______.

Answer and explanation

Correct answer: B. 1905

  1. Step 1: Yogurt containing L. d. bulgaricus and S. thermophilus was first identified by the Bulgarian physician and microbiologist Stamen Grigorov in 1905. Answer: 1905. Why not the others: 1915, 1930 and 1875 don't fit.

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