The answer is clustered. hope this helps
The sentence that combines the two sentences using a present participial phrase is B) Stretching eight feet, the sunflower reaches all the way up to my window.
This is the only sentence where you can find the present participial phrase - <em>stretching eight feet. </em>
Personal feelings and a first-person point of view are twi characteristics of an autobiography, a self-written account of the life of oneself. :)