The answer is: A) primarily to guard his home.
After reading the article from "Selecting the Best Dog Breed for Your Family," by Rebecca Sparling, Jim bought a doberman pinscher to protect his home. The reason is such breed is mentioned as one of the best to emit sounds when they are aware of danger. Actually, the author claims "German shepherds, rottweilers, and doberman pinschers are natural guardians. Their barks will alert you when something out of the ordinary occurs."
What are the underlined words
There are a lot of mammals that walk around the planet every day.<span />
Pop music is usually full of lyrics that appeal to young people that haven't had the chance to experience the world much, so the obscenities such as sex and money usually appeal to them. They are also usually fast paced and great for dancing which is not something that older audiences can do as much as the young ones. Many pop songs also emphasize youth as the greatest virtue, so it's not really adequate for an 80 year old person to behave like a 16 year old and sing how great it is to be young.