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

Which of the following definitions best describes 'regulation of secondary metabolic process'?

A. Any process that modulates the frequency, rate or extent of the chemical reactions and pathways involving phosphorus or compounds containing phosphorus.
B. Any process that modulates the frequency, rate or extent of toluene metabolic process.
C. Any process that modulates the frequency, rate or extent of oxygen metabolic process.
D. Any process that modulates the frequency, rate or extent of secondary metabolism, the chemical reactions and pathways involving compounds that are not necessarily required for growth and maintenance of cells, and are often unique to a taxon.

Answer: Any process that modulates the frequency, rate or extent of secondary metabolism, the chemical reactions and pathways involving compounds that are not necessarily required for growth and maintenance of cells, and are often unique to a taxon.