?
*
#
**
Answer is Right!
Answer is Wrong!
The correct answer is $\boxed{\text{?}}$.
The question is asking which of the following symbols represents one character only in a pattern.
- $\text{?}$ represents any single character.
- $\text{*}$ represents any number of characters.
- $\text{#}$ represents any non-alphabetical character.
- $\text{**}$ represents any two characters.
Therefore, the correct answer is $\text{?}$.