Formal/Academic:
* The study's primary goal was the ascertainment of the prevalence of diabetes in the population. (Meaning: finding out how common diabetes is)
* Through careful questioning and observation, the detective sought the ascertainment of the truth. (Meaning: the act of discovering the truth)
* The legal team focused on the ascertainment of the witness's credibility. (Meaning: establishing the reliability of something or someone)
Informal/Conversational:
* I spent the afternoon trying to ascertain the best route to the beach. (Meaning: finding out the most suitable path)
* The doctor's job is to ascertain the cause of your illness. (Meaning: figuring out the reason for something)
* Before you invest, it's important to ascertain the risks involved. (Meaning: understanding the potential dangers or negative outcomes)
Literary:
* The novel's protagonist embarks on a journey of self-discovery, seeking the ascertainment of their true identity. (Meaning: a deeper understanding of oneself)
* The historian painstakingly searched through old documents, seeking the ascertainment of the lost city's true location. (Meaning: discovering the exact location)
Remember: "Ascertainment" is a formal word that often appears in academic and legal contexts. When writing informally, you might consider using synonyms like "determine," "find out," or "establish" instead.