Which of the following principles explains why the iron filings aligned the way they did? lithospheric reversal induced magnetism magnetic pole reversal pole induction

Hypothesis. why don’t you know this? i learned this stuff in like 5th grade

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

The answer is that they are composed mostly of liquid water.