Match the following correctly

A	B
a Power tiller	1. Plant protection equipment
b Sickle	2. Application of chemicals to seed
c Power sprayer	3. Walking type tractor
d Seed treater	4. Harvesting tool

Correct option is C

Power tiller is a walking type tractor.
Sickle is used for harvesting crops.
Power sprayer is used for plant protection.
Seed treater applies chemicals to seeds.
Thus correct matching is 3-4-1-2.
Therefore, option (c) is correct.