Computer Emergency Response Teams (CERTs) and Computer Incident Response Teams (CIRTs) are organizations designed to react quickly to an actual incident, so those are not our correct answers here. Information Sharing and Analysis Centers (ISACs) are industry-specific groups that facilitate the sharing of threat intelligence among member organizations, making ISAC our correct answer. The FBI’s Infragard program does provide threat intelligence sharing among members, but it is not industry-specific.