Pls I need helps with this question from earths science and it is hard and I try me best and I still struggle with it pls help me it is due today

C

Explanation:

Changes in shape and volume occur when stress and strain causes rock to buckle and fracture or crumple into folds. A fold can be defined as a bend in rock that is the response to compressional forces.

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

6.4 cm (max) - 25 cm (min)