11) Ben Smith, a 47-year-old male, enters the emergency ward of St. Francis 1 point Hospital in Memphis complaining of chest pains. He had been shoveling snow and suddenly experienced sharp pain in his chest, shortness of breath, and nausea. Based only on Mr. Smith's description of his symptoms, Mr. Smith is most likely experiencing a... A. Stroke
B. Myocardial infarction
C. Anemia
D. Brain aneurism

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