Question

the two friends quarrelled. I want to know the reason. simple sentence to Complex sentence containing a noun clause​

Answer 1

Answer:

I want to know the reason that made the two friends quarrelled

Explanation:

I want ....reason: main clause

that made....quarrelled: subordinate noun clause

Answer 2

Answer:

I will also say this that I want to know the reason that made the two friends quarreled