2) Use of the internet has led to an increase in plagiarism - this is when a person takes another person's idea/work and claims it as their own. While it is perfectly fine to quote another person's idea, it is essential that some acknowledgement is made so that the originator of the idea is known to others. This can be done by a series of references at the end of a document or footnotes on each page where a reference needs to be made. Software exists that can scan text and then look for examples of plagiarism by searching web pages on the internet.
Which word can we use to replace the word "then" at the end of Paragraph (2)?