Which stage of MITOSIS is shown in the picture above?

Prophase

Explanation:

Prophase is usually the longest phase in mitosis,the chromatin threads condense to form distinct chromosomes,long and thin at first,later become shorter and fatter.

Each chromosome consist of a pair of chromatids held closely together at the centromere. Nucleolus disappears, nuclear membrane disintegrates, series of spindle (protein) fibres are formed spanning the cell from end to end. In cells where centrioles are present,they lie at each of the two spindle poles.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

if you listed your answers right then i believe your answer is b.