Let's analyze each option to determine which one represents a decimal number.
### Option A: [tex]\( \frac{1}{2} \)[/tex]
This fraction represents the value 0.5 when converted to a decimal. However, in its current form, it is presented as a fraction.
### Option B: [tex]\( 2^3 \)[/tex]
This represents an exponentiation where 2 is raised to the power of 3, yielding [tex]\( 2^3 = 8 \)[/tex]. The result is an integer, not a decimal.
### Option C: [tex]\( \frac{33}{10} \)[/tex]
This fraction represents the value 3.3 when converted to a decimal. However, it is also currently presented as a fraction.
### Option D: .25
This is already in decimal form.
Since only Option D (.25) is presented directly as a decimal, it is the correct representation of a decimal number.
Thus, the correct answer is:
Option D (.25).
