Final answer:
The corrected sentence addresses capitalization errors related to proper nouns and job titles, ensuring they are in line with standard English grammar rules.
Step-by-step explanation:
To correct the capitalization errors in the student's sentence, the sentence should read:
In 1999, executives from major packaged-food companies gathered secretly at the Minneapolis headquarters of Pillsbury. Each CEO and company president came prepared to discuss how the industry should address the nation's obesity epidemic.
The errors corrected include 'Executives' to 'executives', 'minneapolis' to 'Minneapolis', 'pillsbury' to 'Pillsbury', 'President' to 'president', and 'Obesity' to 'obesity'.