Help please, don’t need explanation, thank you :)

"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect