I believe it is D) heliocentric !
A atomic nucleus would give off a particle to become stable. hope this helps you
Bacteria have different phage resistance mechanisms, such as spontaneous mutations, the CRISPR-Cas system.
Spontaneous mutations are the main mechanisms leading to phage resistance by altering the structure of bacterial wall components that act as phage receptors. These include lipopolysaccharides (LPS), outer membrane proteins, cell wall teichoic acids, capsules, and other bacterial components.
At the very end of the cladogram at the very top of a clade in the middle of a clade along the main trunk of the cladogram