The spread of the pathogen of citrus stubborn disease takes place through –

Correct option is C

Correct option (c) Leafhoppers
· Citrus stubborn disease caused by Spiroplasma citri.
· Transmitted by leafhoppers (vector-borne).
· Persistent transmission.
Other options:
· (a) Fungi – Not involved.
· (b) Nematodes – Soil-borne vectors.
· (d) Whitefly – Vector of viral diseases.