For which range of frequencies, human ears are most sensitive ?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Human Ear's Frequency Range:**
- The human ear can detect sound frequencies ranging from 20 Hz to 20,000 Hz (20 kHz). This range is known as the audible range.

2. **Identifying the Most Sensitive Frequency Range:**
- Within the audible range, the human ear is most sensitive to certain frequencies. Research indicates that the ear is particularly responsive to frequencies between 2,000 Hz and 5,000 Hz.

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