Step 1: Understanding the Concept:
The task is to convert a sentence from Active Voice to Passive Voice.
In Active Voice, the subject ("They") performs the action. In Passive Voice, the focus shifts to the object ("a cultural fest").
A crucial rule in voice transformation is that the tense must remain the same.
Step 2: Detailed Explanation:
Let's break down the active sentence:
- Subject: They
- Verb: are organizing (Present Continuous Tense: $is/am/are + V1+ing$)
- Object: a cultural fest
1. Rules for Passive Voice (Present Continuous):
The formula for converting Present Continuous is:
$Object\ (Active) + is/am/are + being + V3\ (Past\ Participle) + by + Subject\ (Active).$
2. Step-by-Step Conversion:
- Step 1: The object "A cultural fest" becomes the new subject.
- Since "A cultural fest" is singular, we use the auxiliary "is."
- Step 2: To maintain the "continuous" aspect of the original sentence, we must add the word "being."
- Step 3: Convert the main verb "organize" into its third form ($V3$), which is "organized."
- Step 5: Add "by them" (the agent).
- Result: "A cultural fest is being organized by them."
3. Evaluating the Options:
- Option (A): "is organized" is Simple Present Passive. (Incorrect tense)
- Option (B): "was being organized" is Past Continuous Passive. (Incorrect tense)
- Option (C): "is being organized" matches our formula perfectly. (Correct)
- Option (D): "has been organized" is Present Perfect Passive. (Incorrect tense)
Step 3: Final Answer:
The passive form must reflect the continuous nature of the original action using "is being + V3." Option (C) is the correct answer.