d
(d) We know $A.adj(A)\left| {\,\begin{array}{*{20}{c}}
{|A|}&0&0\\
0&{|A|}&0\\
0&0&{|A|}
\end{array}\,} \right|\, = \,0$
$\therefore$ $|A|.|adj(A)|\, = \left| {\,\begin{array}{*{20}{c}}{|A|}&0&0\\0&{|A|}&0\\0&0&{|A|}\end{array}\,} \right|$
$\therefore$ $|A|.|adj(A)| = |A|^3$
Now question gives
$\therefore$ $8$.$adj$ $|A| $ = $8^3$ or $adj$ $ |A|$ = $8^3$ = $(2^3)^2=2^6$