Convert the sentence provided below from its passive voice structure to an active voice structure:
The photos will be printed by the studio within an hour.

Correct option is B

The correct active voice of the given sentence is (b) The studio will print the photos within an hour.
Explain the rules of conversion (Passive → Active) with structure in detail:
Passive structure: Object + will be + V³ + by + agent + time
→ The photos + will be printed + by the studio + within an hour.
Active structure: Agent (subject) + will + V¹ + object + time
→ The studio + will print + the photos + within an hour.
Structure:
· Passive: O + will/shall be + V³ + by + S
· Active: S + will/shall + V¹ + O
· Example (rule used): The report will be submitted by her. → She will submit the report.
· Why other options are incorrect:
· (a) Changes tense from future to present simple (“prints”), so meaning/time changes.
· (c) Incomplete and grammatically incorrect (missing auxiliary/tense clarity).
· (d) Changes tense to past perfect (“had printed”), which is not correct for “will be printed.”