Select the most appropriate option to fill in the blank.
A lot of olive oil is ___________ in Spain this year.

Correct option is D

The correct option to fill in the blank is (d) produced.
"Is produced" is the passive voice form of the verb, correctly used here to show that olive oil is being made. (Hindi: बनाया जा रहा है)
Example: A lot of wine is produced in France every year.
Why other options are incorrect:
· (a) produce – Base form; not used with “is” without "to".
· (b) production – Noun, doesn't fit grammatically here.
· (c) producing – Present participle, incorrect in passive voice structure here.
�� Grammar Rule Used:
✔ Passive voice: is/are + past participle (V3) when subject receives the action.
Structure: Subject + is/are + V3 + (by + agent – optional)