What wildcard can be used in digital searches to replace a single character?

The question is asking about the wildcard that can replace a single character in digital searches. The correct answer is the question mark. In many search systems, the question mark is used specifically to represent any single character. For example, if you were searching for "g?m," this search would return results for "gam," "gem," "gim," and so on, effectively allowing for variations in the specific character that the question mark represents.

In contrast, an asterisk serves a different function; it is typically used to replace multiple characters or represent the absence of characters in a search. The exclamation mark and hash do not generally serve as wildcards in common search functionalities, and are less commonly associated with character replacement in searches. Understanding the function of these symbols can greatly enhance the efficiency and effectiveness of searching for data in various digital environments.