Answer:
Starting each sentence with the same words
Explanation:
I believe it is "Starting each sentence with the same words."
Sentence patterns refers to the order of the parts of speech and certain aspects of the English language, like the subject or the object.
The first one is "Use of informal words," which would give an informal tone to a piece of text. However, I do not see how this would make the sentences look similar structurally.
You can immediately eliminate "Use of commas or semi-colons." We use commas and semi-colons in almost any piece of text, but not every piece of text has the same sentence pattern.
Then, we have "Writing about the same topic several times." Even if you write about the same topic, you may come across a new perspective that you did not see before. So, even writing about the same topic can produce different texts and, as such, different sentence structures.
If I were to start every sentence with the word, "however," I would have to make a contrast in every single sentence. In fact, the content would not make sense. See my example:
However, I would like to make a call to Adam and Steve about this evening's meeting. However, I want to talk to Adam before Steve because I need his Powerpoint presentation. However, I do want to talk to Steve after Adam because he left the television on... etc.
See how the sentence structure is similar?
