Task: Class Relation Understanding (ontology: Sciences/Biology)

Which of the following classes is one valid superclass of 'negative regulation of melanosome transport'?

A. 1-alpha,25-dihydroxyvitamin D3 23-hydroxylase activity
B. negative regulation of cellular process
C. 3-demethylubiquinone 3-O-methyltransferase activity
D. 1-phosphatidylinositol-5-phosphate 4-kinase activity

Answer: negative regulation of cellular process