Answer:
Option A.
Explanation:
From the figure attached,
Given : ΔABC ~ ΔDEC
By the property of similarity,
"Corresponding sides of the similar triangles are proportional"
![\frac{\text{AB}}{ED}=(BC)/(EC)=(AC)/(DC)](https://img.qammunity.org/2021/formulas/mathematics/college/hhju5vn7due14np58mmtuvwr3l73sa06zm.png)
Since,
![\frac{\text{AB}}{ED}=(AC)/(DC)](https://img.qammunity.org/2021/formulas/mathematics/college/31s9j4y7bchl5hiybv3rlwyu83w81gxfdi.png)
![(42)/(6)=(x)/((32-x))](https://img.qammunity.org/2021/formulas/mathematics/college/c4g0ygqufgfsvxjyugkwp0pou61w92rc9d.png)
6x = 42(32 - x)
6x = 1344 - 42x
6x + 42x = 1344
48x = 1344
x =
![(1344)/(48)](https://img.qammunity.org/2021/formulas/mathematics/college/k9to0bf7x48sy3jb1pkqadp9do9al16dmv.png)
x = 28 units
Therefore, Option (A). x = 28 units will be the answer.