Sure, let's break down the question step by step:

1. **Identify the key information needed**: The question is asking for the year when the first commercial radio station began operation, which led to radio becoming a true mass medium.

2. **Review the options provided**:
- A. 1890
- B. 1860
- C. 1920
- D. 1830

3. **Historical context**:
- The first commercial radio station is widely recognized as KDKA in Pittsburgh, Pennsylvania.
- KDKA began broadcasting on November 2, 1920.

4. **Match the historical fact with the options**:
- The year 1920 corresponds with option C.

5. **Conclusion**: The correct answer is C. 1920.

So, the completed sentence is: "Radio became a true mass medium in the decades after the first commercial radio station began operation in the year 1920."

Question

Sure, let's break down the question step by step:

1. **Identify the key information needed**: The question is asking for the year when the first commercial radio station began operation, which led to radio becoming a true mass medium.

2. **Review the options provided**:
   - A. 1890
   - B. 1860
   - C. 1920
   - D. 1830

3. **Historical context**: 
   - The first commercial radio station is widely recognized as KDKA in Pittsburgh, Pennsylvania.
   - KDKA began broadcasting on November 2, 1920.

4. **Match the historical fact with the options**:
   - The year 1920 corresponds with option C.

5. **Conclusion**: The correct answer is C. 1920.

So, the completed sentence is: "Radio became a true mass medium in the decades after the first commercial radio station began operation in the year 1920."

Knowee AI · Accepted Answer

Sure, let's break down the question step by step:

1. **Identify the key information needed**: The question is asking for the year when the first commercial radio station began operation, which led to radio becoming a true mass medium.

2. **Review the options provided**:
   - A. 1890
   - B. 1860
   - C. 1920
   - D. 1830

3. **Historical context**: 
   - The first commercial radio station is widely recognized as KDKA in Pittsburgh, Pennsylvania.
   - KDKA began broadcasting on November 2, 1920.

4. **Match the historical fact with the options**:
   - The year 1920 corresponds with option C.

5. **Conclusion**: The correct answer is C. 1920.

So, the completed sentence is: "Radio became a true mass medium in the decades after the first commercial radio station began operation in the year 1920."

Radio became a true mass medium in the decades after the first commercial radio station began operation in the year __________.A.1890B.1860C.1920D.1830

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