proportional dilution. PBA Grde 12 Federal Board.

PBA Question
A laboratory has a 1 M NaCl stock solution.
A student needs to prepare 100 mL of a 0.1 M NaCl solution for an experiment.
Tasks:
Calculate the volume of the stock solution (1 M) required.
Calculate the volume of distilled water that should be added.
Write the step-by-step procedure to prepare the solution using a measuring cylinder or pipette.
Identify the independent variable and dependent variable in this dilution