Select the most appropriate option to fill in blank number 3.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. conventional.
Conventional farming refers to the traditional or typical methods of farming, often involving chemical inputs, which contrasts with organic farming.
The other options don't fit as well in this context: insipid refers to something dull or bland, mechanical suggests something automatic or robotic, and rigorous implies strictness or difficulty, which isn't the best fit here.