Boiling point elevations proportional to the molar concentration of dissolved particles. So that's what you have to figure out, being careful to (1) properly convert mass to moles and (2) recognizing that some of the solutes can form ions so you can get more than one particle per "molecule".
Let's look at glucose. If you work out the molecular mass it's about 180 grams per mole. Divide that into 10 grams and you get about 0.056 moles of glucose molecules in your one liter of solution.
Now try sodium sulfate. For this one you have a "molecular" mass of 142 grams per mole, so you seem to get about 0.070 mole of particles. Except ... Sodium sulfate forms ions, each "molecule" gives one sulfate ion and two sodium ions. Thus three particles overall, and you have to multiply your 0.070 figure by that factor of 3. Thus the sodium sulfate solution will have 0.21 mole of ions in one liter. The sodium sulfate solution will therefore give a higher boiling point than the glucose solution.
Work it out now with the other two choices and pick the one with the most particles in solution including ion formation. Be sure to use reasonably accurate atomic masses because this set of choices could throw you for a loop.