Final answer:
The concept that suggests political power is distributed among various organized interest groups, particularly where political parties are weak, is referred to as 'Pluralism.' option b.
Step-by-step explanation:
In the context of political power distribution, the statement "Where political parties are weak, interest groups are strong" aligns with the concept of B. Pluralism.
Pluralism contends that political power does not reside solely with the elite but is spread among a wide range of interest groups. According to this theory, citizens join various groups, each vying for government attention and influence. Political power is thus distributed across these many groups, giving citizens multiple access points to engage with government.
In contrast, Elite theory suggests that government is controlled by a small, wealthy elite, while Hyperpluralism indicates an excessive and challenging level of group influence. An Iron Triangle, on the other hand, refers to the stable relationship among a bureaucratic agency, a congressional committee, and an interest group, which can sometimes exclude other voices from the policy-making process.