Select the most appropriate option to fill in the blank.
The activist is working really hard and was determined to ________ for this cause.

Correct option is A

Option (a) is the correct meaning of the given idiom.
Given Idiom: Move heaven and earth
Meaning: To do everything possible; make every effort to achieve something. (हरसंभव प्रयास करना)
Example: He moved heaven and earth to get his daughter admitted to that college.
Other related idioms and their meanings:
·  Keep the wolf from the door – To manage to survive despite poverty (गुजारा करना)
·  Blow his own trumpet – To praise oneself (अपनी तारीफ करना)
·  Have feet of clay – To have a hidden weakness (कमज़ोरी होना)