Which transitional expression is used for adding information?

The transitional expression "beside" is used for adding information because it suggests a continuation or extension of an idea by introducing additional relevant details. This word serves to connect new information to what has already been presented, emphasizing that this new information is in alignment with or complements the previous statements.

In contrast, words such as "to summarize" indicate a conclusion or recap of previously mentioned ideas, while "finally" also denotes a conclusion or the last point in a series rather than the addition of new information. The term "however" introduces a contrast or exception to what has been stated previously, rather than adding to the information. Overall, "beside" is effective for the purpose of reinforcement or expansion of the ideas presented.