Select the opposite of the given word: Corrupt 

Option C is right. Corrupt means 'dishonest,' whereas moral implies 'honest.' For example: Because he is a decent guy, the corporation is willing to offer him responsibilities. Choice A denotes "courage." Choice B denotes 'lofty.' D stands for 'rise.' Choices A, B, and D are incorrect.

Upgrade means to make anything better or more helpful, or to promote something or someone to a higher position or rank. For instance- The calibre of their service has been improved, The sewage treatment plant is being upgraded by the city, the Telephone system at the office is being upgraded, to draw in more business travellers, the hotel was modernised.