Answer :

To determine the SI unit for the magnetic field, we need to examine the units presented:

1. tesla (T): This is a standard unit used in the measurement of magnetic fields. The tesla is formally recognized as the SI unit for magnetic flux density or magnetic induction.

2. gauss (G): While gauss is also a unit for magnetic field, it is not the SI unit. It belongs to the CGS (centimeter-gram-second) system of units, where 1 gauss equals [tex]\(10^{-4}\)[/tex] tesla.

3. N/C (Newton per Coulomb): This unit measures the electric field, not the magnetic field. It specifies the force experienced per unit charge in an electric field.

4. V/m (Volt per meter): This unit is also used to measure the electric field strength, rather than the magnetic field.

5. V (Volt): This unit measures electric potential or electromotive force, and it is not related to measuring the magnetic field.

Therefore, the correct SI unit for the magnetic field is:

tesla (T).