Rewrite this sentence so that it begins with a prepositional phrase.
the members of the orchestra tuned their instruments.
having found their seats, the members of the orchestra began to tune their instruments.
on the stage, the members of the orchestra began to tune their instruments.
softly, the members of the orchestra tuned their instruments.
the instruments were tuned by the members of the orchestra.

A prepositional phrase is such a phrase which begins with a preposition (on, under, over, etc) and ends with a noun, pronoun, gerund, phrase etc.

So here, the correct sentence will be "On the stage the members of the orchestra began to tune their instruments".

different strategies reach different people based on their ability to understand the material. (from personal experience) when writing an argumentative essay write explaining the subject as though your audience never heard of it before and it is just being introduced, then explain why other people hate it also, afterward you would explain why that would be wrong. i hope that : )