The author is considering adding this sidebar to the passage:

A veterinarian, "vet" for short, is a type of physician who provides medical treatment to animals. Many veterinarians specialize in a specific field such as companion animal (or pet) medicine, which focuses on animals such as cats and dogs, or equine medicine, which focuses on horses. Other vets may choose to specialize in caring for livestock, reptiles, birds, or other animals. In addition to a traditional four-year undergraduate degree, veterinarians must attend four years of veterinary school, which includes at least one year of hands-on training in clinical rotations. Veterinarians earn a broad range of salaries, but those who own their own practices typically earn the most.
How would this sidebar support the information in the passage?
A) It describes what the narrator would have to do to become a veterinarian.
B) It explains why veterinarians need as much training as doctors for humans.
C) It provides a comparison of the salaries of different veterinary specialties.
D) It illustrates why many veterinarians choose to specialize in a certain field.

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.

(b) britain had a much larger navy than the u.s.

(d) the u.s. had a small army compared to britain.

before we work more on piecing ideas together to form summaries and paragraphs, we need to look at fundamental sentence construction. imagine you are reading a book for school. you need to find important details that you can use for an assignment. however, when you begin to read, you notice that the book has very little punctuation. the sentences fail to form complete paragraphs and instead form one block of text without clear organization. most likely, this book would frustrate and confuse you. without clear and concise sentences, it is difficult to find the information you need.

for both students and professionals, clear communication is important. whether you are typing an email or writing a report or essay, it is your responsibility as the writer to present your thoughts and ideas clearly and precisely. writing in complete sentences is one way to ensure that you communicate well. this section covers how to recognize and write basic sentence structures and how to avoid some common writing errors.

roosevelt, a progressive reformer, earned a reputation as a "trust buster" through his regulatory reforms and anti-trust prosecutions. his "square deal" included regulation of railroad rates and pure foods and drugs; he saw it as a fair deal for both the average citizen and the businessmen.