Answer and explanation

Correct answer: B. 293 K

  1. Step 1: Add 273 to the temperature in degrees Celsius.
  2. Step 2: 20 + 273 = 293 K.
Answer
293 K.
Why not the others: −253 K: 273 was subtracted from the temperature. 20 K: no conversion was done. 253 K: 20 was subtracted from 273.

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