To date, researchers have identified subtypes of the GABA receptor, and the exact function of each __________.
A)more than 20; is still being explored
B)more than 20; has been identified
C)between 12 and 15; has been genetically isolated
D)less than 20; is still being explored

Question

Quizplus · Accepted Answer

The correct choice is A because it accurately reflects the ongoing research into the numerous subtypes of the GABA receptor, indicating that while there are more than 20 identified subtypes, their exact functions are still under investigation.

To Date, Researchers Have Identified Subtypes of the GABA Receptor