HELP TIMED Explain what Sam can do to fix his engine in the following scenario.

Situation: Sam tried out a new hobby and rebuilt a car from scratch. When he got to the crankshaft, he was careful to attach it to the camshaft with the gears. He also made sure that the pistons were tightly attached to the crankshaft gears as well. It was also held in place by a series of journals. Finally, he made sure that the belt was in place on one side of the crankshaft. When James came over to look at the car, he noticed that Sam's crankshaft was still incomplete.

Ahigh school teacher wants to study the seating habits of students in the cafeteria to determine if students sit in the same seats or change seats from day to day. she sits in the cafeteria for several days, and without interacting with the students, records where they sit each day. what is a potential benefit of this type of research? there is an independent variable. there is a dependent variable. the researcher can gain personal information about an individual. the participants act normally. the information can be gathered over a period of several years.