What type of variable star is shown in the image above?
A. Cepheid variable
B. Delta scuti variable
C. Stochastic variable
D. Lyrae variable

"Delta scuti variable" type of variable star is shown in the given image.

Option: B

Explanation:

AI Velorum stars also popular as the high-amplitude Delta Scuti variables. Fath discovered the instability of the prototype of these sort of stars in 1935 while Smith named these objects Dwarf Cepheids in 1955 as they appeared unique from RR Lyrae stars due to their greater metallicity and distinct relationship between time and luminosity. After white dwarfs, these variables are the second leading source at Milky Way. Delta Scuti stars show pulsations of both radial and non-radial luminosity.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

a) carbon, hydrogen

b) carbon, hydrogen, oxygen, nitrogen

c) carbon, hydrogen, oxygen, nitrogen, phosphorus

d) sugar

e) amino acid

f) nucleotide