During the twentieth century, the study of the large-scale structure of the universe evolved from the theoretical to the practical; the field of physical cosmology was made possible and the better ability to observe extremely distant astronomical objects. (A) because of both Einstein's theory of relativity and
(B) by both Einstein's theory of relativity and
(C) by Einstein's theory of relativity and also
(D) because of Einstein's theory of relativity and also
(E) as a result of both Einstein's theory of relativity and

because growing process had stoped after 4-5 year

answer: the correct answer for the fill in the blank is rods.

rods are the specialized photoreceptor cells that are present in the retina of human eye. they are responsible for vision in the night time ( also called scotopic vision). they have very low visual acuity and color distinguishing ability.

as they are responsible for vision in night time, therefore they are found predominantly in the nocturnal animals.

metals only

metalloids only

nonmetals only

metal and metalloids

metalloids and nonmetals