I didn't want to type all of this, so instead I showed proof and gave you the answer.
I can't particularly place what Icelandic contributed.
But every other culture contributed majorly.
So I would go for option b.
Answer:
C. An ion with a +2 charge
Explanation:
I guess
Answer:
Only 2,3,4 are true
Explanation:
Bosons Particles are particles that condense to the same state. Bosons particle have integral spin like 0 ,
,
,
, etc. Bosons particles always have asymmetric wave function and there is exchange of particles.
1) It does not obey Fermi_ Dirac statistics
2) It obeys Bose-Einstein statistics
3) The object can have intrinsic spin 
4) Yes the Bosons particle is always symmetric with exchange of particles
5) No Bosons particle are symmetric and not asymmetric