Correct option is B
The correct substitution of the highlighted phrase is (b)
was now showing the blurred faces of the inmates of the rehabilitation centre.
Explanation: "Was now showing" is grammatically correct in tense and agreement with the singular subject "programme."
"Blurred faces" is appropriate to describe unclear visuals, aligning with the past continuous tense.
Grammatical Rule Used:
· A singular subject takes a singular verb (was).
· The continuous tense is used for actions happening at a specific time in the past (showing).
· Example: The documentary was showing clips of endangered species.