To determine the square root of [tex]\(225\)[/tex], we need to find a number that, when multiplied by itself, gives the product [tex]\(225\)[/tex].
Let's check:
1. If we consider [tex]\(14\)[/tex]:
[tex]\[
14 \times 14 = 196
\][/tex]
This is not equal to [tex]\(225\)[/tex], so [tex]\(14\)[/tex] is not the square root of [tex]\(225\)[/tex].
2. If we consider [tex]\(15\)[/tex]:
[tex]\[
15 \times 15 = 225
\][/tex]
This is exactly [tex]\(225\)[/tex], so [tex]\(15\)[/tex] is the square root of [tex]\(225\)[/tex].
3. If we consider [tex]\(25\)[/tex]:
[tex]\[
25 \times 25 = 625
\][/tex]
This is much larger than [tex]\(225\)[/tex], so [tex]\(25\)[/tex] is not the square root of [tex]\(225\)[/tex].
Based on these calculations, the correct option is:
[tex]\[
\boxed{15}
\][/tex]
