Direction: In each of the following questions, choose the set of numbers from four alternatives, that is similar to the given set.
Given set: $(63,49,35)$

Let's examine the common factor ratio of the numbers in the target set $(63,49,35)$:
They are all multiples of $7$:

* $63=7\times 9$
* $49=7\times 7$
* $35=7\times 5$

The structural proportion between the elements is $9:7:5$.

Let us test the options to find an identical scaling ratio:
In Option D $(81,63,45)$, the numbers are all multiples of $9$:

* $81=9\times 9$
* $63=9\times 7$
* $45=9\times 5$

The elements match the exact same $9:7:5$ ratio configuration.