social media presented for their businesses purposes
This is not very clear in meaning. I do not doubt that the confusion in your summary presentation is because you used a run-on sentence for the explanation. Once you learn to write single idea sentences, that relate to one another to create a clear paragraph, you will be able to write more coherent / easily understandable paragraphs. This paragraph will definitely not get a good GRA score due to the confusion it created when providing information to the reader. The reader needs to know:
- What types of media were used?
- What sorts of businessess were involved in the study?
- How were the measurements collected?
- What sort of business purposes were represented by the metric?
These are the single idea sentences that should have been present in the summary overview.
The rest of the paragraphs could have used less run-on sentences for the comparative presentation as well. Write long paragraphs instead. The maximum scoring potential of each paragraph is reached within 3-5 sentences. Try to meet the individual sentence idea, and maximum sentence count per paragraph to get better overall scoring considerations.