Complete the statements using correct options:
i. The apparent movement of the sun means that ________.
(a) the sun revolves around the earth in a year.
(b) it appears that the sun moves to the north or south in a year.
(c) the earth keeps on changing its position.
ii. If the axis of the earth were not tilted ________.
(a) the earth would not have rotated around , itself.
(b) the earth would have revolved around the sun with greater velocity.
(c) different parallels on the earth would have experienced the same climate throughout the year.
iii. 21st June and 22nd December are solstice days, that is ________.
(a) the sun starts its southward journey from Tropic of Cancer on 21st June and Northward journey from Tropic of Capricon on 22nd December.
(b) the Dakshinayan of the sun takes place between 21st June and 22nd December.
(c) the Uttarayan of the earth takes place between 22nd December and 21st June.
iv. The revolution of the earth around the Sun and the tilt of the axis of the earth together are responsible for the ______.
(a) summer, rainy season, retreat of monsoon, winter.
(b) summer, winter and spring.
(c) summer and winter.
