Which of the following permissions are set on the /tmp/ directory?

rwxrwxrwt represents octal 1777 - full read, write, and execute permissions for owner, group, and others, plus the sticky bit (shown as 't') which restricts file deletion to the file owner only, making it safe for a world-writable shared temporary directory.

rwx r-x (755) grants write access only to the owner and lacks the sticky bit, so it cannot function as a world-writable shared temporary space.

rwSrvW-- is not a valid standard Linux permission string and has no corresponding octal representation or meaningful semantics in the Unix permissions model.

rwxrwS-- lacks execute permission for others and uses a capital S (setgid without execute) rather than the sticky bit, so it neither grants world-writable access nor protects users' files from deletion.

r-xr-X-t removes write permissions from owner and group, preventing any user from creating files in the directory, which contradicts the purpose of a shared temporary space.