Answer: B: 2
Step 1: Lets look at this paragraph carefully,
The cat carefully crept across the kitchen floor and found the mouse digging through the cabinets.
Definition of Prepositional Phrase: modifying or around an object by taking action with it, examples: about, after, at, before, behind, by, during, for, from, in, of, over, past, to, under, up, with.
lets try and look for those related
Step 2: Lets see what we got,
The cat carefully crept across the kitchen floor and found the mouse digging through the cabinets.
Step 3: These two are prepositional phrases,
"Crept across the kitchen floor"
"Digging through the cabinets"