Answer:
The best answer to the question: What is the best way to revise these sentences to add variety in sentence structure? Would be: Growing tomatoes upside down in planters, which is a form of container gardening, has advantages and disadvantages.
Explanation:
When writing in English, there is a usual misconception, especially from learners, that it is always better to write in short sentences, rather than using connectors and other forms of punctuation to join ideas that complement each other, which add to the structure of a paragraph, and that do not need to be disconnected from each other by the use of periods. In the original sentence: "You can grow tomatoes upside fown in planters. This is a form of container gardening. But it has advantage and disadvantages", the three clauses are talking about information that is interconnected, and which, in fact, adds value to what has been said before, enriching it. Since there is a connection in the ideas, and one complements the others, then there is no need to separate them with periods, but we can link their ideas with the use of connectors and other forms of punctuation. This is what the option selected above does, and in the correct manner of correlation and organization so that the original information is reflected in the second structure. This form provides fluidity to the text.
