1. B. Let $x=\frac{\sqrt{5}-3}{2}$. Then the value of the algebraic expression
$$
x(x+1)(x+2)(x+3)
$$

is ( ).
(A) 0
(B) 1
(C) -1
(D) 2
1. B. C.

From the given, we have $x^{2}+3 x+1=0$. Therefore,
$$
\begin{array}{l}
x(x+1)(x+2)(x+3) \\
=\left(x^{2}+3 x\right)\left(x^{2}+3 x+2\right) \\
=\left(x^{2}+3 x+1\right)^{2}-1=-1 .
\end{array}
$$