Correct option is B
The correct option to fill in the blanks is (B) the, the.
Explanation: The sentence refers to a specific forest and a specific puppy, hence "the" is used before both nouns.
Example: He ordered them to search the forest for the lost puppy.
The (हिंदी अर्थ): वह विशेष (निर्दिष्ट वस्तु के लिए)
Meanings of the other options:
· A - a, the: First part incorrect; forest is specific
· C - a, a: Both general, not suitable for “lost puppy of the boy”
· D - the, a: Second part incorrect; puppy is already known
Information Booster: Use "the" when talking about something specific or already mentioned.