The rare-Earth hypothesis would predict that the factor flᵢfₑ, in the Drake equation should be close to
A) 0
B) 0.25
C) 1
D) 0.5

Question

Quizplus · Accepted Answer

The rare-Earth hypothesis suggests that the emergence of complex life is an extremely rare occurrence, implying that the factors in the Drake equation related to the development of intelligent life (flᵢfₑ) would be very close to 0.

The Rare-Earth Hypothesis Would Predict That the Factor Flᵢfₑ, in the Drake