Hi

Droppers need to choose code 2 .

This because,

Code 2 is for those who have already passed class 12th board examination, and tgis code can be used by droppers or by those who are pursuing a graduation course but  they don't have physics chemistry and Biology in their course or have completed graduation but don't have at least two of physics chemistry and Biology.

Here's a short brief of Neet codes :-

Code 1 :- code 1 is for all those students who are going to appear for their 12th board examination in 2021 with physics, chemistry, biology and English.

Code 2 :- code 2 is for all those who have passed their 10+2 in the year 2020 or before with physics, chemistry, biology and English

Code 3 :- code 3 says it is for those passed their intermediate / pre- degree examination  in the year  with physics, chemistry, biology and English ,your physics, chemistry and biology should also contain practical exam.

Code 4 :- pre - medical degree with Physics, chemistry and biology.

Code 5 :- code 5 is for all those who are doing BSc and has all the three of Physics, chemistry and biology in their graduation.

Code 6 :- code 6 is for all those students who have passed  BSc  with at least any two of following subjects :-

-) Physics,

-)chemistry ,

-)biology

Code 7 :- code 7 is for those who have passed their examination from foreign board which is equivalent of Indian 10+2 board.

For more visit

https://medicine.careers360.com/articles/neet-qualification-codes

Thank you