B. Cooperative federalism has been practiced in the US since 1860.
Cooperative federalism, or the concept of federalism in which local, state, and federal governments work together to create policies, replaced dual federalism in the 1930s.
Explanation:
it means tire pressure. you need to go to a tire shop
Because every society/group/culture is different and doesn’t obey by the same rules. Society is also constantly changing (unlike exact sciences like math, whatever experiment/research you try will most likely have a different result every time) therefore doesn’t follow hard rules.
A buddhism that's the answer