2. The protest started seven ... ago.

2. The protest started seven ... ago.

The text mentions that the protest started 'one week ago'. Since 'week' is not an option, and the question asks about the duration in a general sense, 'days' would be the most fitting unit if we consider 'seven' as a specific number of days. However, the context of a protest starting usually refers to a period of time like days or weeks. Looking at the options, 'days' is the only one that makes sense in context with 'seven'.

Ответ: D) days