Select the option that expresses the given sentence in active voice.
"Jaundice is caused by drinking contaminated water."

Converting Passive to Active Voice:
· Passive: "Jaundice is caused by drinking contaminated water."
· Active: "Drinking contaminated water causes jaundice."
Explanation:
1. Identify the subject, verb, and object:
· Subject: Jaundice (in passive) → Changes to Drinking contaminated water (in active).
· Verb: "is caused" → Becomes "causes" in active voice.
· Object: Drinking contaminated water (in passive) → Becomes Jaundice (in active).
2. Use the correct verb tense:
· The passive voice uses "is caused" (present simple passive).
· The active form should be "causes" (present simple active).
Other options:
· (a) "caused jaundice" → Incorrect because it changes the tense to past.
· (b) "can cause jaundice" → Incorrect because "can" is not in the original sentence.
· (c) "has caused jaundice" → Incorrect because it changes the tense to present perfect.
Thus, the correct answer is (d) "Drinking contaminated water causes jaundice."