1. Calculate the moles of NaCl

* Molar mass of NaCl: 58.44 g/mol

* Moles of NaCl: (11.7 g) / (58.44 g/mol) = 0.200 mol

2. Convert the volume to liters

* Volume: 100 mL = 0.100 L

3. Calculate the molarity

* Molarity (M) = Moles of solute / Liters of solution

* Molarity = (0.200 mol) / (0.100 L) = 2.00 M

Therefore, the molarity of the solution is 2.00 M.