Respuesta :

Six (I’m putting this because there is a there is less than 20 characters)
mmar1279

Answer: Hello there! Your answer for this question is option (D).

Step-by-step explanation: The answer is option (D) because there is 10 students that completed 10-19 problems and 8 students that completed 0-9 problems.

10 + 8 = 18

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