Read the sentence.
i staggered sleepily into the office to check my calendar, only to realize that my boss had staggered all the workers' shifts. hooray! it's a surprise day off!

which best identifies the meanings of the italicized words in the order in which they appear in the sentence?

surprise; walk unsteadily

surprise; arranged in a zigzag or overlap

walk unsteadily; surprise

walk unsteadily; arranged in a zigzag or overlap