To suppose that the earth is the only populated world int eh infinite space is as absurd as to assert

Consider the following statement and statement and select the correct stating the nature of the argument involved in it:
To suppose that the earth is the only populated world int eh infinite space is as absurd as to assert that in an entire field of millet only one grain will grow.
(a) Astronomical
(b) Anthropological
(c) Deductive
(d) Analogical