nayana-c1.867c992ae9100904cc61c84591adf0f8f863e0387e30f0d0dbc86640e9f50a1a.en.validation.199

The task

What is the importance of prioritising qualitative and/or survey-based studies in understanding older workers' labour market participation? A. They provide causal evidence. B. They help understand the complexity of the retirement decision and labour market participation of older workers, especially for factors not covered in administrative registers. C. They replace the need for register data. D. They are cheaper than register data studies. Return only the single uppercase letter of the correct option.