Acomputer application used to enter, analyse and present quantitative data

The "instance" relationship shows that something is an object of a

1. for which of the following are you not required to signal beforehand? a. changing lanes b. speeding up c. stopping

Jenny needs to record the names of 30 students, write down the subjects they studied, and note their grades in each subject after the midsemester exams and the end-of-semester exams. she divides the midsemester and end-of-semester information into two separate worksheets, sheet 1 and sheet 2. how will she rename the two worksheets?