How does diacylglycerol (DAG) contribute to the activation of protein kinase C (PKC) in the Phosphoinositide Signaling Pathway?

• A. DAG directly phosphorylates PKC.
• B. DAG inhibits the activity of phospholipase C.
• C. DAG, along with calcium ions, binds to PKC, facilitating its activation.
• D. DAG increases the production of cAMP.

Answer: (C)