Step 1: Identify correct update and merge commands
To update local main, use 'git checkout main' and 'git pull origin main'. To merge feature branch, use 'git merge feature' on main, then push.
Step 2: Check options for this sequence
git checkout main; git pull origin main; git merge feature; git push origin main matches this exact sequence. Others either merge in wrong direction or omit steps.
Final Answer:
git checkout main; git pull origin main; git merge feature; git push origin main -> Option D