Step 1: Understanding the Question
The question asks for the name of the green pigment found in plant leaves.
(Note: The correct spelling is "Chlorophyll". The options have a typo, "Chlorophils").
Step 2: Defining the Pigments
(A) Cyanophils: This is a general term for cells or tissues that are readily stained by blue or green dyes; it's not a specific pigment.
(B) Chlorophylls (Chlorophils): This is the primary photosynthetic pigment in plants, algae, and cyanobacteria. It absorbs light most strongly in the blue and red parts of the spectrum and reflects green light, which is why plants appear green.
(C) Xanthophylls: These are yellow pigments found in plant leaves. They are accessory pigments that help in photosynthesis and become visible in autumn when chlorophyll breaks down.
(D) Carotenes: These are orange, red, and yellow pigments (like beta-carotene in carrots). They are also accessory photosynthetic pigments.
Step 3: Final Answer
The green pigment in plant leaves responsible for their color and for photosynthesis is chlorophyll. Therefore, option (B) is the correct answer.