Answer 4 is the correct one.
Complicated instruments can possibly produce unreliable data depending on if they were used correctly, but they don't always do so.
Simple instruments like rulers can produce unreliable data if the data required is extremely precise, such as decimal measurements, but larger measurement values are typically fine.
More expensive equipment doesn't necessarily mean that it's better, it's just what the manufacturer decided to price the equipment at.
Depending on the situation, different equipment can be better, from a ruler to a caliper.
The system of the rich getting a better deals or buying their way out, and the poor generally being screwed, even if they're innocent, is still pretty much in place.
When your classmates at school work cooperatively on a project, it is anexample of positive influence by :
C. peer Group
another example, you start studying hard because your close friends do
hope this helps
