During `G_(1)` phase of cell division

Options

A. RNA and proteins are synthesized
B. DNA and proteins'are synthesized
C. cell prepares for cell division
D. cell undergoes duplication

Answer

### Step-by-Step Solution:

1. **Understanding the Cell Cycle**: The cell cycle consists of several phases, including interphase (which is further divided into G1, S, and G2 phases) and the mitotic phase. Interphase is the period of preparation for cell division.

2. **Identifying the G1 Phase**: The G1 phase, also known as the Gap 1 phase, is the first phase of interphase. It occurs after the mitotic phase and before the S phase.

3. **Key Activities During G1 Phase**:
- **Preparation for DNA Synthesis**: The primary role of the G1 phase is to prepare the cell for DNA replication, which occurs in the S phase.
- **Synthesis of RNA and Proteins**: During G1, the cell synthesizes RNA and proteins that are essential for DNA replication and other cellular functions.
- **Cell Growth**: The cell also increases in size and synthesizes various enzymes and nutrients that are necessary for the next phase.

4. **Distinguishing Between Phases**:
- **S Phase**: This is where actual DNA synthesis occurs.
- **G2 Phase**: This phase prepares the cell for mitosis, ensuring all components are ready for cell division.

5. **Conclusion**: The most appropriate activities that take place during the G1 phase are the synthesis of RNA and proteins, which are crucial for the upcoming DNA replication in the S phase.

### Final Answer:
During the G1 phase of cell division, the cell synthesizes RNA and proteins in preparation for DNA replication that will occur in the S phase.