The context suggests a positive reaction, making 'enthusiasm' the most fitting choice.

In the context of the passage, 'ameliorate' means to improve, making option B the correct replacement.

'Improve' is the best replacement for 'ameliorate', as both words convey the idea of making conditions better.

In the context of the passage, 'mitigate' means to reduce the severity of an issue, making 'reduce' the best replacement.

'Ubiquitous' means present everywhere or widespread, so 'common' is the best replacement in this context.

'Common' is the best replacement for 'ubiquitous', as it conveys the idea of smartphones being widely present in society.

'Arduous' means difficult, making option 2 the closest in meaning.

The word 'meticulous' means showing great attention to detail, which is closest in meaning to 'thorough'.

In the context of the passage, 'mitigate' means to reduce the severity of an issue, making 'reduce' the closest synonym.

'Ubiquitous' means present everywhere or widespread, making 'widespread' the closest synonym in meaning.

The retention rate peaked in Year 4, as indicated by the highest point on the retention line graph.

The bar graph indicates that 2022 showed the highest sales for the product.

The graph illustrates that 2019 had the most fluctuations in sales figures, indicating high volatility.

The context implies that there is an issue with the data, making 'discrepancy' the correct choice.

The term 'flawed' indicates that the findings had significant issues, making them unreliable for broader application.

The context indicates that something negative was found in the data, making 'discrepancy' the correct choice.