What is the process called when two strings are joined together to form a new string?

The correct answer is concatenation, which specifically refers to the process of joining two or more strings together to create a single new string. In programming and computer science, concatenation is a fundamental operation where the individual character sequences of the strings are linked in the order they are combined. For example, if you concatenate the strings "Hello" and "World," the result would be "HelloWorld."

This operation is widely supported across many programming languages and is often represented by operators such as the plus sign (+) or specific functions designed to handle string operations. Concatenation plays a key role in various applications, such as constructing messages, building file paths, and manipulating text data in user interfaces or databases.

The other options do not accurately describe the process of joining strings in the context of computing. Aggregation generally refers to a collection of items grouped together, often used in database contexts. Condensation typically relates to diminishing volume or size, while combination might imply a broader concept not limited to string manipulation. Thus, concatenation is the precise term used in programming to denote the joining of strings.