# In the absence of green house effect what would be the mean temperature of earth?

$\begin{array}{1 1}(a)\;-16^{\large\circ}C&(b)\;-15^{\large\circ}C\\(c)\;-12^{\large\circ}C&(d)\;-14^{\large\circ}C\end{array}$

$-15^{\large\circ}C$
Hence (b) is the correct answer.