SAVE

Option A: "He is saving his strength for the heavy work he will have to do this afternoon" is a correct and common usage of the verb "save". It means to reserve or conserve energy for later use.

Option B: Malati saved the little boy from drowning. This is the correct use of 'save,' referring to protection. 

Option C: This is correct, formal usage of "save" meaning "except" or "but". It indicates that the only piece of information known about Vijay is the exception clause that follows.

Option D: "I have saved myself of the truth of the report" is not correct standard English usage. The verb "save" requires a different preposition (usually "from" or "for") to describe being spared from something, such as "I saved myself from the truth".