What kind of nuance is "towards"? I think it should be "in" or "of".
Although "in" or "of" technically works here, "towards" has been used to signify the process of a change occurring. When we talk about trends, "towards" is often used because it is used to signal a shift or change towards (moving to) something else. Ex: There has been a recent trend towards biking instead of driving. Ex: More awareness about climate change has started a shift towards more eco-friendly behavior.
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