Q. 1 C
Choose the correc A. Heliocentric theory
B. Geocentric theory
C. Gravitational force
D. Circulation of blood
Option (d) is correct because the circulation of blood was discovered by William Harvey in 1616.
Option (a) in incorrect because Heliocentric theory was given by Nicolaus Copernicus in 1543.
Option (b) is icorrect because the Geocentric theory was given by Aristotle.
Option (c) is incorrect because Gravitational force theory was devised by Galileo.
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