Flowering dependent on cold treatment is
Vernalisation
The correct option is A:
Explanation of the correct option:
Explanation of the incorrect options:
Option B:
Cryotherapy is nothing but the use of extreme cold to freeze and destroy the abnormal tissue.
Option C:
Cryoscopy is a technique for determining the molecular weights of solutes by measuring the lower freezing points in liquid induced by dissolved substances.
Option D:
The science of cryogenics is concerned with the development and effects of extremely cold temperatures.
Final answer: Flowering dependent on cold treatment is Vernalisation.