There is a certain relationship between two given words on one side of :: and one word is given on another side of :: while another word is to be found from the given alternatives, having the same relationship with this word as the given pair has.

Pesticide : Crop :: Antiseptic :?

Choose the best alternative from the following?

The relationship between the given pair needs to be identified first.

A pesticide is a substance applied to crops to protect them from pests, diseases, and harmful organisms that could damage the crop.

The relationship is: Pesticide is applied to Crop for protection against harmful agents.

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Applying the same relationship to Antiseptic:

An antiseptic is a substance applied to wounds to protect them from harmful microorganisms and prevent infection.

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Examining the alternatives:

Option 1 (Wound): Antiseptic is applied to wounds for protection - matches the relationship ✓

Option 2 (Infection): Infection is what antiseptic prevents, not what it is applied to

Option 3 (Bandage): Bandage is a separate medical supply, not the surface where antiseptic is applied

Option 4 (Bleeding): Antiseptic prevents infection, not bleeding

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The correct analogy is:

Pesticide : Crop :: Antiseptic : Wound

Both follow the pattern: protective substance : target surface

Therefore, the answer is Option 1: Wound.