Answer:
Hi there. Advocacy campaign is an activity by an individual or group to influence decisions and to create policies, plans or programs for a particular issue. This activity uses specific messaging campaign like these two examples: No to Plastic, and Waste Reduction campaigns.
Explanation:
It is kind of hard to explain but there is your answer.
I think b but i could be wrong
The double bubble sign on ultrasound is a sign for duodenal atresia which is associated with Down Syndrome.