If I had gotten the lowest mark in the assignment, I would ask myself about the reason for this bad grade. A very probable reason is that I had not studied enough- probably I was distracted by other activities, such as watching a movie. However, since it resulted in a bad grade, I would want to change this behaviour next time and I would prepare for the exam instead of watching the movie!
The correct answer would be B, since complex sentences have 1 independent variable and one dependent variable.
The dependent variable would be: Everytime he hears a siren
Why? Because it is not a complete thought.
The independent variable would be: My dog howls loudly.
Why? This statement is a complete thought.
A would be a compound sentence
C would be a simple sentence
D would be compound complex.
Hope I could help!
