The infective stage in reniform nematode is –

✅Explanation:
The reniform nematode (Rotylenchulus reniformis) has a life cycle where the second-stage juvenile (J2) is the infective stage. After hatching from the egg, the J2 undergoes four molts in the soil without feeding. It is in this J2 stage that the nematode penetrates the roots of the host plant and establishes a feeding site.