Select the option that expresses the given sentence in passive voice.
Ishika saw the tiger in the forest.

To convert the active voice sentence into passive voice, we follow these steps:

1. Identify the subject, verb, and object in the active voice sentence:
- Subject: Ishika
- Verb: saw (simple past tense of "see")
- Object: the tiger
- Adverbial phrase: in the forest

2. In the passive voice, the object of the active sentence becomes the new subject:
- New Subject: The tiger

3. Convert the verb into the passive form for the simple past tense. The pattern is:
was/were + past participle (V3) of the verb
Since "the tiger" is singular, we use "was". The past participle of "saw" is "seen".
- Passive Verb: was seen

4. Add the agent (the original subject) preceded by the preposition "by":
- Agent: by Ishika

5. Keep the adverbial phrase "in the forest" in its appropriate place (usually at the end of the clause):
- Adverbial phrase: in the forest

Combining these elements gives us the passive voice sentence:
"The tiger was seen by Ishika in the forest."

Therefore, the correct option is:
The tiger was seen by Ishika in the forest.