state gov DSSSB Junior Assistant, Steno and LDC Mock Test 2023 - 24 English Grammar Active and Passive Voice
Change the sentence to the passive voice: "Researchers are frequently exploring new treatment options for life-threatening diseases."
1
New treatment options for life-threatening diseases are frequently being explored by researchers.
2
Researchers are being frequently explored new treatment options for life-threatening diseases.
3
The frequent exploration of new treatment options for life-threatening diseases is done by researchers.
4
New treatment options are being frequently researched by life-threatening diseases.