Answer:
A- All of these
Step-by-step explanation:
B) Too many simple and compound sentences can make writing sound choppy.
B is true. Too many short and simple sentences can make your writing appear unsophisticated. Your ideas and overall flow may seem very disconnected. This impression can also be caused by too many sentences in a row that begin with a simple word or subject (i.e. I, the, a).
C) Too many complex and compound-complex sentences can make writing difficult to follow.
C is true. Compound-complex and complex sentences are more difficult to process and follow for the fact that there is more going on and is very drawn out (i.e. run on sentences)
D) Combining sentences of various structures and lengths throughout your paper provides greater balance.
D is true. Alternating between various structures and lengths allows writers to use sentences strategically. They can emphasize important points through short sentences and tell stories with longer ones. It is also a technique for smoothing out choppy writing and making a piece of writing more engaging and clearer for the reader.
All of these options are true, so a) all of these is your answer.
Have a wonderful rest of your day! :)