Which of the following described qualitative data? a. recording the temperature of a solid as it is warmed. b. noting the color of a solution as it is heated. c. measuring the volume of an object by water displacement d. taking the mass of an object using balance.

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).