sentence choice - Preposition Usage; "My interest in ~", "My interest about ~" or "My interest to ~"

I wonder which one of these is the best sentence.

Or, if they make different meaning in sentence, please explain it to me !

1. My interest in human right in North Korea has started from CNN documentary.
2. My interest about human right in North Korea has started from CNN documentary.

3. My interest to human right in North Korea has started from CNN documentary.

Thank you ! :)

Answer

The best answer is in. People have an interest in things. See the attached graph. It includes both the simple present (interest) and simple past (interested) forms. The number of uses of interest(ed) about things is so low that it is represented by just a line straight across the bottom of the graph. I did not include interest to because in your sentence that is not grammatical.

Examples include:

1 I am interested in human rights.

2 My interest in human rights began with...

3 He is interested in that woman...

If you want to use about, a common word used with it is curious or curiosity.

Examples include:

1 I am curious about human rights.

2 My curiosity about human rights began with...

3 He is curious about that woman...