Usage of "and so on" with "such as"

Hello teachers,

I have an urgent query. I request you to reply to it as soon as possible. Many many thanks in advance.

Which of the following sentences is perfectly correct gramatically?

You can carry out many activities during the tour, such as trekking, yatching, fishing, and so on.


OR

You can carry out many activities during the tour, such as trekking, yatching, and fishing.

OR

You can carry out many activities during the tour such as trekking, yatching, and fishing.


I would also request you to give the logic behind the answer.

Neeraj,
You can carry out many activities during the tour, such as trekking, yatching, fishing, and so on.


OR

You can carry out many activities during the tour, such as trekking, yatching, and fishing.

OR

You can carry out many activities during the tour such as trekking, yatching, and fishing.


I would also request you to give the logic behind the answer.

Neeraj,

All 3 of your sentences look grammatical but do not sound very natural. "Carry out" means to execute or complete a task as in
" The crime was carryied out flawlessly with no clues left behind".

If I understand the context, here is what I would say:

 

There are sport activities you may choose to participate during this trip such as trekking, yachting, and fishing.

 

 

Liat,
before you quote, please make sure your quotation is correct. That's not my "statement". Mine was in blue at the bottom if you read it carefully.
I colors didn't come out as I had hightlighted it. In fact, I try not to use "so on " if  I can avoid it.