In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
p_q_ _qq _ p_ qr/ निम्नलिखित प्रश्न में अक्षरों का कौन-सा समूह खाली स्थानों पर क्रमवार रखने से दी गई अक्षर श्रृंखला को पूरा करेगा?
p_q_ _ qq _ p _ qr

Options

A. qrppr
B. qrprq
C. qrpqr
D. qpprq

Explanation

To solve the problem of completing the letter series "p_q_ _qq _ p_ qr", we need to fill in the gaps with the correct sequence of letters from the given options. Let's break down the solution step by step.

### Step-by-Step Solution:

1. **Identify the Gaps**: The series has gaps that need to be filled:
- p _ q _ _ qq _ p _ qr
- This gives us 5 gaps to fill.

2. **Analyze the Options**: We have four options to consider:
- Option 1: q r double p r q
- Option 2: p q r q double p r
- Option 3: p q q r q p q
- Option 4: q q r p q r

3. **Trial and Error**: We will fill in each option into the gaps and check if the resulting series makes sense.

4. **Testing Option 1 (q r double p r q)**:
- Fill in: p q r p q q qq r p q r
- Result: p q r q q qq p q r
- This does not form a valid series.

5. **Testing Option 2 (p q r q double p r)**:
- Fill in: p p q r q p q qq p r
- Result: p p q r q qq p r
- This does not form a valid series.

6. **Testing Option 3 (p q q r q p q)**:
- Fill in: p q q q r q p q
- Result: p q q r q p q
- This does not form a valid series.

7. **Testing Option 4 (q q r p q r)**:
- Fill in: p q q q r p q
- Result: p q q r p q
- This results in a valid series: p q q r p q r.

8. **Conclusion**: The correct option that completes the series is Option 4: **q q r p q r**.