You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.

You mean to add another string or, for example, just tune a A to C? If it's the latter, yes it's doable... but why would you want to?
can you tune a violin to include a C string?