The answer is C - Similarities and differences
The answer would be C. The committee's bickering was seriously impeding any real progress.
impede would translate to preventing...such as preventing progress.
Active voice is when the subject performs the verb. The answer is 'Our puppies played at the cool new dog park' because the puppies are playing, while the rest of the verbs in the other choices are not being acted at by the subject.
Answer:
1. decide what kind of essay to write.
2. brainstorm your topic.
3. research the topic.
4. choose a writing style.
5. develop a thesis.
6. outline your essay.
7. write your essay.
8. edit your writing to check spelling and grammar.