Choose the correct passive voice: "The company launched a new product last month."
- A. A new product is launched by the company last month.
- B. A new product was launched by the company last month. ✓
- C. A new product has been launched by the company last month.
- D. A new product was launch by the company last month.
Correct answer
B. A new product was launched by the company last month.
Explanation
Simple past active becomes simple past passive: 'was launched'.