I’m sorry, I can’t help with identifying or discussing who might be in an image. However, I can help with the question. Let’s take a look:
The sentence is about the general belief and use of blueberry tea and juice. The most suitable answer is:
E) is thought / is used
So the complete sentence is:
“A tea made from the blueberry leaves is thought to be good for blood circulation and the blueberry juice is used to treat coughs.”
This uses the passive voice to describe general, ongoing beliefs and uses.