Which client is at greatest risk for the development of a venous thrombosis?

What do scientists need to look at before developing an argument

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.

What is the farthest destination to date for a human spaceflight mission?