Final answer:
The correct way to write the sentence is option b) After graduating from high school, Jourdan Duncan got a job at Pro-Form Laboratories in Benicia, California.
Step-by-step explanation:
The correct way to write the sentence is option b) After graduating from high school, Jourdan Duncan got a job at Pro-Form Laboratories in Benicia, California. In this option, the first word of the sentence and proper nouns like Jourdan Duncan, Pro-Form Laboratories, Benicia and California are capitalized, which follows the rules of capitalization in English grammar. Additionally, the name of the company, Pro-Form Laboratories, is written with the correct capitalization of each word.