Easy question i need help in please

Confederation:

Select the answer that best defines the given word.
1)A government in which all power stems from a single central authority
2)A government that secedes from another government
3)A government in which power is shared between a sovereign central authority and various local governments
4)A loose affiliation of sovereign states that have agreed to cede some power to a central authority

Question

Easy question i need help in please 

Confederation:

Select the answer that best defines the given word.
1)A government in which all power stems from a single central authority
2)A government that secedes from another government
3)A government in which power is shared between a sovereign central authority and various local governments
4)A loose affiliation of sovereign states that have agreed to cede some power to a central authority