Constitutional law is considered political because it emerges from decisions that are based on fundamental social values and principles, rather than being directly influenced by the current political party, personal opinions of judges, or economic policies. The core of constitutional law is its foundation in the basic values and principles that a society holds dear, which are inherently political in nature. Option B correctly identifies this aspect, making it the right answer. Options A, C, and D, while they might seem plausible, do not accurately capture the essence of why constitutional law is political. They either focus on transient factors (A and D) or on individual biases (C), which are not the primary reasons for the political nature of constitutional law.