As a member of the geology rocks club, you like to take a rock hammer and break open rocks. these rocks will break along their which are weak due to the rocks a.) joints; cooling and contracting during formation b.) fractures; being compressed for long periods of time c.) planes; cooling and contracting during formation. d.) spines; being exposed to intense heat

the answer is c because that is the answer im sure and by the way your welcome

The correct answer is option A.) "joints; cooling and contracting during formation".

Explanation:

In Geology, a joint is a break or fracture that is naturally formed within a rock. Joints are formed as a result of cooling and contracting during its formation, or by the addition of layers of minerals during its formation.The rocks will break along their joints when they are hit with hammers because joints are their weak spots.

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