Asked by Zee

Which evidence provides support for the nebular theory:
a) scientists have observed the formation of a distant solar system
b) the nebular theory has been proven mathmatically
c) astronomers have observed protoplanetary disks around distant newborn stars
d) none of the above

I think it's A... but it could be C... and it could be D... so I'm not sure. Help please?
Answered by Scott
not a ... we don't have the technology yet ... same for c

b) ... computer modeling
Answered by e
It's C.
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