For transferring the disease resistance gene from wild variety to the most suitable agronomically desirable variety the suitable method is

Answer: Option B

For transferring the disease resistance gene from the wild variety to the most suitable agronomically desirable variety the suitable method is Back cross.
Backcrossing is the plant breeding method most widely used to incorporate one or a few genes into an elite or adapted variety.
In this method, the parent used for backcrossing has a large number of desirable attributes but lacks a few characteristics.