(A) $\rightarrow$ Raisins worth Rs. $16$.
$8 \%$ ------ $250$ grams
$16 \%$ ----- ?
$\frac{16}{8} \times 250 =500$ grams
(B) $\rightarrow$ Badam worth Rs. $15$
$10 \%$ ---- $250$ grams
$15 \%$ ---- ?
$\frac{16}{8} \times 250=375$ grams
$\%$ of sugar = $15 \% \times 375 =56.25 $ grams.
(C) $\rightarrow$ Cashew worth Rs. $8$
$7 \%$ ---- $250$ grams
$8 \%$ ---- ?
$\frac{8}{7} \times 250 =285.71 \approx 286$ grams
$\%$ of sugar = $20 \% \times 286 =57.14$ grams
(D) $\rightarrow$ $125$ grams of each
Raisins $=125 \times 12 \% =15$
Badam $=125 \times 15 \% =18.75$
Cashew $=125 \times 20 \% =25$
$\Rightarrow \: 58.75$
Hence option (A) is answer as the maximum amount of sugar is in Raisins.