Use a simple charge balance argument. For any ion, the number of electrons equals the number of protons minus the charge on the ion, since a positive charge means that many electrons have been removed relative to the neutral atom.
Hydrogen always has 1 proton, because its atomic number is 1. The ion in question, H+, carries a charge of +1.
$$\text{electrons} = \text{protons} - \text{charge} = 1 - 1 = 0$$
This confirms that H+ has no electrons at all, it is simply a bare proton. This is exactly why the H+ ion does not exist freely in water and is instead written as H3O+ once it attaches to a water molecule. The answer is 0, option A.