Now molecules:
Amolecules of H2
+
Bmolecules of 02
=>
Cmolecules of H2O

A
1, 2, 3

B
1, 2, 3

C
1, 2, 3

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.