The time taken that the aliens on Vormir will be waiting is 6 days.
From the information given, the speed ia given as 0.7 and the time taken is given as 8.5. It should be noted that the formula for calculating distance will be:
Time = Speed × Distance
Time = 0.7 × 8.5
Time = 6 days approximately.
Therefore, the correct option is D.
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