Addition of to pure water causes the greatest increase in conductivity

C) ionic compounds

Explanation:

Addition of ionic compounds, such as inorganic salts, to pure water causes the greatest increase in conductivity because these substances are strong electrolytes and completely dissociate and produce ions.

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph