Step 1: Identify the maximum value.
Given data:
\[
12,\,
25,\,
15,\,
18,\,
35,\,
11,\,
45,\,
33,\,
22,\,
10.
\]
The largest value is
\[
45.
\]
Step 2: Identify the minimum value.
The smallest value is
\[
10.
\]
Step 3: Calculate the range.
\[
\text{Range}
=
45-10
=
35.
\]
Conclusion:
\[
{35}
\]
Hence, the correct answer is Option (C).