A student tests four solids for their ability to complete an electrical circuit when dissolved in water by observing their ability to close a circuit containing a light bulb and obtains the following results:

Solid Concentration (M) Strength of light emitted
A 0.20 Bright
B 0.20 Dim
C 0.20 None
D 0.20 Bright
Which of the solids is a weak electrolyte when dissolved in water?

Check all that apply.

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Check all that apply.

A
B
C
D