In which phase of the cell cycle does $DNA$ replication occur?

Interphase is called the resting phase because

In humans, how many hours does it take to complete one full cell cycle (in $hours$)?

The period between mitosis and the initiation of $DNA$ replication is called .........

In which phase does $DNA$ replication occur?

Which of the following statements are correct for $G_{1}$-phase?
$I.$ It is the last substage of interphase
$II.$ Cell organelles do not increase in number
$III.$ Cell grows in size and content both
$IV.$ It synthesizes $RNAs$,proteins and other biochemicals for cell growth and subsequent replication of $DNA$
Choose the correct option