Frase: Electronic circuits suffer

All Electrical or Electronic circuits or systems suffer from some form of "time-delay" between its input and output, this delay is usually known as the Time Constant of the circuit and it is the time response.
1. Do que os circuitos eletrônicos sofrem:
[ ] falta de tempo entre as saídas
[ ] atraso no sinal de saída
[ ] falta de sintonia
2. O que é time response:
[ ] tempo de resposta
[ ] responsabilidade do circuito
[ ] uma constante de tempo