Correct Answer - c
Previousl interphase is called resting stage because there is no apparent activity related to cell division. The interphase cell is metaboliclityquite active. Interphase consist of three subsphases `(G_(2),G_(2) "and" S)`. Synthesis of ENA occurs in S phase. `G_(1)` is the period between the end of mitosis and the start of S phase. `G_(2)` is the interval between S phase and start of mitosis. As the synthesis of DNA occurs in S phase so it is considred as metabolically active phase.