It is B balance, because it has a 0,01 g divisions scale. The minimun division in A balance is only 0,1 g, i.e, decigram measurement.
Explanation:
Independent variable and dependent variable
From about 300ppm to about 377ppm :D
Electron requires energy to move from ground state to excited state(higher energy levels). Hence option 1 is correct. Hope this helps!
A - its condensation and gas particles have a higher kinetic energy
