Is this statement correct?
The "that" clause serves as a complement to the noun "fact" and provides additional information about what is asserted. It doesn't modify the fact; instead, it acts as a subordinate clause that explains or specifies the nature of the fact being asserted.

Here is a sentence.
"The fact is asserted that nuclear power plants are becoming safer to operate than many people think"

Question

Is this statement correct?
The "that" clause serves as a complement to the noun "fact" and provides additional information about what is asserted. It doesn't modify the fact; instead, it acts as a subordinate clause that explains or specifies the nature of the fact being asserted.

Here is a sentence.
"The fact is asserted that nuclear power plants are becoming safer to operate than many people think"

Answer

yep, it unites two parts of the complex sentence
1 power plants are becoming
2 it's a fact

Answer

"That" is serving as a relative pronoun. It's not complementing "fact", it's replacing it to avoid repetition. Without the relative pronoun, you would two sentences with "fact" as the subject:

"The fact is asserted. The fact is that nuclear power plants are becoming safer to operate than many people think"

لا تفوّت فرصة تعلّم لغة جديدة وأنت مرتاح في منزلك. تصفّح مجموعتنا المختارة من مدرّسي اللغات ذوي الخبرة وسجّل في درسك الأول الآن!