I remember that "research about something" or "research into something" are both correct. However, in OG 2020, I found a question with the explanation saying that it's incorrect to use "about", "into" or "on" following the verb "research". Is this always true?
the correct answer is:
Someone has taken a sabbatical to research the books James wrote.
Wrong answers:
Someone has taken a sabbatical to research about the books James wrote.
Someone has taken a sabbatical to research into the books James wrote.
Someone has taken a sabbatical to research on the books James wrote.
Thank you