After fertilization cells as seen here divide repeatedly. the next step in the development of a multicellular organism would be?

a: cytokinesis

b: cleavage

c: differentiation

d: furrowing

Answer;

Differentiation

Explanation;

-Fertilization is the process in which female gametes, ovum, fuses with a male gamete, sperm, to form a diploid zygote.

-Cell differentiation on the other hand is the process that creates cells with different structures and function through gene activation.

-Fertilization of an ovum by a sperm results to cell differentiation in which an individual with millions of cells and hundreds of cell types is formed, with cells that are organized into complex and diverse tissues and organs.  

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .