Considering A is a picture of a fibrous joint, a suture on the skull, the true answer is c. It becomes ossified late in adult development
Explanation:
Fibrous joints are connected by dense connective tissue, consisting mainly of collagen. A suture is a type of fibrous joint that is only found in the skull (cranial suture). This specific type becomes ossified late in adult development and it is called craniosynostosis, when the fusion is before birth. These joints are synarthroses.
I feel it's to easily differentiate the positive from the negative...... like in gram staining of bacteria, the colour tell us which bacteria is gram positive or gram negative...... I just feel that this is science and it is advisable to know what the opposite result of an experiment should look like.
