In general, asexual reproduction is used by organisms.
a.
underwater
b.
complex
c.
simple
d.
extinct

C.  simple

Explanation:

Simple organisms like prokaryotes which include bacteria prefer asexual mode of reproduction. There are various ways through which simple organisms can reproduce asexually like binary fission, budding fragmentation etc. The reason why simpler organisms prefer asexual mode of reproduction is because energetically it is less demanding mode of reproduction. As compared to sexual reproduction, asexual reproduction utilizes less ATPs. Apart from this, a large number of progeny can be reproduced in very short interval of time through asexual reproduction.

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.

if you know your abc's you should be able to get your answer or just use google