8. When a fair coin is tossed three times in a row, the probability of getting at least two consecutive heads is ( ).
(A) $\frac{1}{8}$
(B) $\frac{1}{4}$
(C) $\frac{3}{8}$
(D) $\frac{1}{2}$
(E) $\frac{3}{4}$
8. C.

Tossing a uniformly distributed coin three times in a row, there are $2^{3}=8$ possible outcomes. Therefore, the scenarios with at least two consecutive heads are 
(Head, Head, Head), (Head, Head, Tail), (Tail, Head, Head).
Thus, the probability of getting at least two consecutive heads is $\frac{3}{8}$.