The news that he has died is false. Here the underlined part is-
An adverb clause
An adjective clause
Correct
A noun clause
Principal clause
Explanation:
Correct Answer is: An adjective clause
That he was died এই clause টি তার পূর্ববর্তী noun (The news) কে modify করে adjective এর মতো কাজ করেছে।