The doctor was worried 'that Charlie was putting on too much weight.'

• Independent clause:
- An independent clause is a group of words that contains a subject and verb and expresses a complete thought.
- যে clause নিজে নিজে পরিপূর্ণ অর্থ প্রকাশ করতে পারে না তাকে Dependent/Subordinate clause বলে।

• The correct option is - The independent clause is - The doctor was worried.
- The doctor was worried. দ্বারা নিজে নিজে পরিপূর্ণ অর্থ প্রকাশিত হয়।