This ECG is most likely associated with

Ans-2.C, If we focus on any one lead like lead 2 ,tall tented t waves are a seen.T wave is said to be tall when its amplitude is more than 50% of R wave.Cause is hyperacute mi or hyperkalemia.out of these options conn's syndrome will cause hypokalemia(t waves short or absent or inverted)multiple myeloma will lead to hypercalcemia(qt interval short in ECG)renal failure is mostly associated with hyperkalemia,while SIADH causes hyponatremia(normal ECG or decreased qrs amplitude but no t wave abnormality)