What was Sandra's attitude toward hypnotism when she was at school?

Sandra's attitude towards hypnotism when she was at school can be understood as one of interest and curiosity. This suggests that she had a positive view of hypnotism and was likely open to learning about it or engaging with it in some way. An attitude categorized as 'interesting' implies that she recognized its potential significance or appeal, which could involve enthusiasm for its possibilities or a desire to explore it further.

Given this understanding, the other options do not align with the definition of an interesting attitude. If she had found it boring, it would suggest a lack of engagement or curiosity instead of a positive interest. Indifference would mean she showed no particular feelings about hypnotism, indicating that it did not capture her attention either way. Feeling scared of hypnotism would indicate a negative reaction, which contrasts with the idea of finding it interesting. Thus, the choice that best reflects a positive and engaged mindset towards hypnotism is the one indicating that she thought it was interesting.