C looks to be right, normally when ¨and¨ theres no comma, but when there are two sentences theres normally a comma. plus when saying a title theres normally a :
Dilation is a transformation that does not produce a congruent image.
When the dilation factor is greater than 1, the resultant figure is bigger than original.
When the dilation factor is less than 1, the resultant figure is shorter than original.
Dilation, then causes enlargement or contraction, which, of course, do not produce a congruent image with the original one.
Answer:
i think its A. (I might be wrong)
They use their specific style of writing which makes their writing unique
