Convert the sentence provided below from its passive voice structure to an active voice structure: It has been claimed that important data was being disclosed by employees within the firm.

Correct Answer: Someone has claimed that employees were disclosing important data within the firm.

To convert the given sentence from passive voice to active voice, let us break down its structure and analyze each part:

Original Sentence: "It has been claimed that important data was being disclosed by employees within the firm."

1. First Clause: "It has been claimed..."
- This clause is in the present perfect passive voice.
- The agent who claims is not specified, so we introduce an indefinite subject such as "Someone".
- Converting "has been claimed" to active voice gives: "Someone has claimed..."

2. Second Clause: "...that important data was being disclosed by employees within the firm."
- This clause is in the past continuous passive voice ("was being disclosed").
- The performer of the action (the subject in active voice) is "employees" (from "by employees").
- The object receiving the action is "important data".
- Changing "was being disclosed by employees" into past continuous active voice yields: "employees were disclosing important data".

Combining the parts:
"Someone has claimed that employees were disclosing important data within the firm."

Therefore, the correct active voice structure is: Someone has claimed that employees were disclosing important data within the firm.