Questions

Answer: J

Explanation:   Start with the letter J in the top left square, and move clockwise around the other squares. Letters follow the alphabetic sequence, skipping 4 letters at a time. Start with the X in the inner square in the top left, and move clockwise. These inner letters also follow the alphabetic sequence, skipping 5 letters at a time

Some more NPP Acronym stands for 

NPP New Patriotic Party

NPP Nuclear Power Plant

NPP Notice of Privacy Practices

NPP Non-Physician Practitioner

NPP New Progressive Party

NPP National Patriotic Party

NPP Notice of Proposed Procurement

NPP Neighbourhood Police Post (Singapore)

NPP Non-Paged Pool (memory)

NPP Nurse Practitioner in Psychiatry.

Donna Tratt

A tetrad is best described by Four chromatids. It is formed from two homologous chromosomes, each consisting of two chromatids in the first stage of meiosis called prophase1.