Neural Control and Coordi question bank (Biology)

In the axon of a giant squid neuron,
(i) The resting membrane potential is $-70$ mV.
(ii) At the equilibrium potential of $\text{Na}^+$ ($E_{\text{Na}^+} = +55$ mV) there is no net movement of $\text{Na}^+$ ions across the membrane.
In an experiment, when the axon is stimulated, the voltage-gated $\text{Na}^+$ channels open. The membrane potential peaks at $+30$ mV, where the resistance of the axonal membrane for $\text{Na}^+$ flow is $1 \times 10^6$ $\Omega$.
The net $\text{Na}^+$ current ($I_{\text{Na}^+}$) across the membrane and the direction of ionic movement at the peak is:

GATE Technical Standard: In computational modeling of 'General', what constitutes the primary performance trade-off regarding asymptotic efficiency and resource conservation?