Cherry-picking involves selecting a specific commit and applying its changes onto the current branch. It essentially rewrites the commit history, maintaining the selected changes without merging the entire branch. This can be useful for incorporating specific features or bug fixes from one branch to another without merging the entire commit history.

When migrating from a centralized VCS to Git, compatibility issues with existing repositories often arise. Git's distributed nature may pose challenges in adapting to a different workflow, and ensuring a smooth migration is crucial.

The git reset --hard HEAD command is used to undo the last commit and return the repository to the state of the last successful merge. This allows the developer to start fresh and reattempt the merge while resolving conflicts. Other options like git revert and git clean have different purposes and do not address the need to undo the merge.

The technique of LFS (Large File Storage) in Git allows the separation of large binary files from the codebase, making it ideal for managing database backups and other large assets. Git LFS replaces large files with text pointers, reducing the overall repository size and improving performance. This is particularly beneficial when dealing with large binary files commonly found in database backups.

By default, the 'master' branch in Git represents the main development branch. It is the default branch that is created when you initialize a new Git repository. Developers often use this branch for ongoing development and feature integration.

The correct option is amend. The git commit --amend command allows you to modify the most recent commit message. It opens the default text editor for you to make changes. This is useful when you need to fix a typo or provide additional information to the commit message without creating a new commit.

The 'git push' command is used to upload the local repository to a remote repository on a cloud platform. It sends local changes to the remote repository, keeping them in sync.

The correct option is git checkout. It is used to discard changes in the working directory by replacing them with the last committed version. On the other hand, git reset is more commonly used for moving the branch pointer and can be more powerful, potentially discarding commits. git checkout is a safer option for simply undoing changes in the working directory.

The correct option is (d) rebase. The command git rebase -i allows for interactive rebasing, providing a powerful interface to modify commit history. This is particularly useful for rearranging, editing, or combining commits to maintain a cleaner project history.

Git integrates code review tools directly into the workflow. This allows for seamless collaboration, with developers able to comment on specific lines of code, suggest changes, and ensure code quality before merging.