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

Which of the following definitions best describes 'receptor clustering'?

A. A process in which a protein is transported to, or maintained in, a location within a plasma membrane of cell tip.
B. Grouping of smoothened or patched receptors in a cilium, contributing to the smoothened signaling pathway.
C. The clustering process in which postsynaptic density protein 95 (PSD-95) molecules are localized to distinct domains in the cell membrane. PSD-95 is mostly located in the post synaptic density of neurons, and is involved in anchoring synaptic proteins.
D. The receptor metabolic process that results in grouping of a set of receptors at a cellular location, often to amplify the sensitivity of a signaling response.

Answer: The receptor metabolic process that results in grouping of a set of receptors at a cellular location, often to amplify the sensitivity of a signaling response.