Final answer:
Buhi's spending on social media has grown from 12% to around 25%.
Step-by-step explanation:
In the question, it is stated that Buhi's spending on social media has grown from 12% to around _____________. This indicates that the percentage has increased. To determine the answer, we need to consider the given options: A) 15%, B) 20%, C) 25%, and D) 30%. Since the original spending was 12% and it has grown, the answer must be greater than 12%. Among the options, the only one that satisfies this condition is option C) 25%. Therefore, the correct answer of the question is 25%.