probably or certainly

[jasonlulu_2000]

The first time I watched the company perform, I had a dream of being one of their dancers. Over time, I was exposed to more, my interests in the world of dance _________ varied but that dream of someday becoming a dancer in the company never left me.
A. certainly B. probably

The answer given is B, but why is Answer A wrong?
Is it because "probably" is often used to talk about a future possibility?

Thanks for your help!

Jason

[Raymott]

The first time I watched the company perform, I had a dream of being one of their dancers. Over time, I was exposed to more, my interests in the world of dance _________ varied but that dream of someday becoming a dancer in the company never left me.
A. certainly B. probably

The answer given is B, but why is Answer A wrong?
Is it because "probably" is often used to talk about a future possibility?

Thanks for your help!

Jason

"Probably" is wrong. The speaker would know if their interests varied or not, so "certainly" is the only possible choice.

[5jj]

"Probably" is wrong. The speaker would know if their interests varied or not, so "certainly" is the only possible choice.

This is one of the rare occasions when I do not agree with Raymott (or the people who liked his post). I think that it's possible for the writer to realise, after the time in question, that his/her interests, despite his/her feeling at the time, did vary. I think that both answers are possible.