Which is the term for the process of organ formation in an embryo? . . a. gastrulation. . b. organogenesis. . c. neurulation.

B. Organogenesis 
Is the process of the development of organs in an embryo, therefore the correct answer

As Gastrulation is the initial group and combining of cells into a blastocyst. And Neurulation is the formation of the neural plate and tube to lay the foundations for the nervous system.

It should be cryosphere and hydrosphere

1. protection 2. homeostasis 3. storage4.blood formation5.bone marrow 6.movement