English grammar rules: independent clauses
When do we use that instead of which? When do we need a comma after the clause?
Ex:
A learned that the real challenge encountering in international business acquisition is the lack of management competency on resource integration. "encountering... acquisition" modifies challenge.
A conduct a systematic study on international business acquisition, earning himself an honer. "earning... honer" modifies the main clause.
Can I write like this :
A conduct a systematic study on international business acquisition that/which earning himself an honer. "that/which earnin... honer" modifies a systematic study
OR
A conduct a systematic study on international business acquisition, that earning himself an honer.
"that/which earnin... honer" modifies the main clause.