The (1) is the shapeless background against which collagen fibers are seen through the microscope. Molecules
in ground substance include (2), a long, unbranched
polysaccharide that is very slippery, and (3), which are
formed from proteins and polysaccharides. Proteoglycan
(4) are composed of 80-100 polysaccharides, called
(5), each attached at one end to a common protein core.
If the protein cores of proteoglycan monomers attach to
hyaluronic acid, proteoglycan O are formed.
Proteoglycans trap large quantities of (7), which allows
them to return to their original shape when compressed or
deformed. Several adhesive molecules are found in ground
substance, including (8) in cartilage, 12 in bone, and
(10) in fibrous connective tissue.

pregnancy happens more and more

interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.