Which of the Following Statements Best Describes Scaffolding Proteins

Multiple Choice

Which of the following statements best describes scaffolding proteins?

A) microtubule arrays that allow lipid-soluble hormones to get from the cell membrane to the nuclear pores
B) large molecules to which several relay proteins attach to facilitate cascade effects
C) relay proteins that orient receptors and their ligands in appropriate directions to facilitate complex formation
D) proteins that enter the nucleus of a cell to regulate transcription