Answer:
The answer to your question is below
Step-by-step explanation:
Elements in group 1A all:
a. gain 1 electron This option is wrong, elements in group 1A loses one electron.
b. lose 1 electron This option is right.
c. are non-metals This option is incorrect, elements in group IA, are metals.
d. have 2 energy levels This option is incorrect, only one element in each group has 2 energy levels.