A hypothesis is A.
a summary of events written in a particular fashion.
B.
a statement that proposes a possible explanation to some phenomenon or event.
C.
the process of experimentation designed specifically to disprove a scientific theory.
D.
the result of a scientific experiment performed for the purpose of proving a theory.

where is the scientific experiment?

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."