Select the correct passive form of the given sentence.

Shashi was enjoying the game.

The game was being enjoyed by Shashi.

The correct passive form of the given sentence "Shashi was enjoying the game" is The game was being enjoyed by Shashi.

The other options are incorrect because:

• The game is being enjoyed by Shashi uses the present progressive tense, while the original sentence is in the simple past tense.
• The game was enjoying by Shashi is grammatically incorrect. The verb "enjoying" is in the present participle form, but it is not used correctly in the passive voice.
• The game has been enjoyed by Shashi uses the present perfect tense, which is not typically used for actions that happen continuously.
• The game was enjoying is grammatically incorrect. The verb "enjoying" is in the present participle form, but it is not used correctly in the passive voice.