Q--Does Northern fur seal make good pet for six year old?
A--My step-by-step reasoning: An average six year old weighs 45 pounds. An adult Northern fur seal can weigh up to 120 pounds. Northern fur seals have sharp canine teeth for tearing. Northern fur seals live near rivers to feed off of fish populations.
So, the answer is no.

Q--Do most college students own a fax machine?
A--My step-by-step reasoning: College students typically must submit assignments via email, web portal, or on paper. Most colleges have on-campus fax machines available for student use.
So, the answer is no.

Q--Is a railroad engineer needed during NASCAR events?
A--My step-by-step reasoning: Railroad engineers work on trains and railway systems. NASCAR events feature automobile races.
So, the answer is no.

Q--Was Lord Voldemort taught by Professor Dumbledore?
A--
My step-by-step reasoning: Lord Voldemort grew up as the orphan boy Tom Riddle. Tom Riddle was brought to Hogwarts by Professor Dumbledore. Dumbledore was one of Riddle's teachers during his time as a student.
So, the answer is yes.