An atom of nitrogen has seven electrons. I hitch diagram correctly represents the arrangement of these electrons?

C.

Explanation:

1s2 2s2 2p3

              ∧ ∧ ∧

⇅     ⇅   |    |   |

"Cooling the water and Using crystals with a greater surface" would NOT help you to win.

Option: A and C

Explanation:

As the competition for preparing ice-tea in the most fastest manner is possible only by saving more and more time in steps followed to prepare it. Ice tea is prepared, when tea leaves are boiled in small amount of water to have concentrated tea flavor, then after achieving its room temperature some lemon drops are added for flavor to avoid haziness and add sugar powder with small ice cubes to make it chilled by stirring quickly. Thus adding greater surface area crystals may not fit into glass size or become time taking to melt and also restrict stirring, even cooling water is also time taking.