In op-amp, the effect of asymmetries. between the internal circuits driven by inputs can be reduced by 

Adding a resistor at the input to V⁺_cc side: This might help balance the input impedance, but typically won't directly address internal circuit asymmetries. It could impact biasing or loading effects, but it's not a direct solution to asymmetries within the op-amp.

• Adding a resistor at the input might affect input impedance, but it doesn't directly target or compensate for internal asymmetries within the op-amp's circuits.
• While changing the input impedance might help in certain cases, it doesn't inherently address imbalances between the internal circuitry.

Here, option 1 is correct.