This artist creates and photographs clouds that hover for seconds within interior spaces.

Dutch artist Berndnaut Smilde

Explanation:

I'm not sure what you're options were but Berndnaut Smilde creates and photographs real life clouds inside empty spaces.

c, d, e, f, g, a, b, and c.

sometimes western music will also use solfege. the names of these are do ra me fa sol la si (or ti) and do.

to indicate a note a half step higher or lower then the original note, you would say c # (for a half a step above c) or bb (for half a step below b)