What is Which of the following is one of the objectives of “Oral Global Health by 2000 AD”? and explain in detail?
Objective of WHO Oral Global Health by 2000:

50% of the 5-6 years old should be caries free.
Global average should be no more than 3 DMF at age 12. 
 85% of population should retain all their teeth by age 18.
A 50% reduction in edentulousness in present levels at age 35-40 years should be achieved.  
A 25% reduction in present level of edentulous at age 65 or more.
A data-based system for monitoring changes in oral health should be established.

World Health Organisation
https://www.who.int/oral_health/publications/goals2020/en/