Concept:The options test the correct spelling of two easily confused verbs: "precede" (to come before) and "proceed" (to move forward or continue).
Explanation:The word needed in the gap means "to go on or continue".
The correct spelling for this meaning is "proceed", written as p-r-o-c-e-e-d.
"Precede" is also correctly spelt, but it means "to come before something", so it does not fit the required sense.
"Preceed" is the wrong spelling of "precede".
"Procede" is the wrong spelling of "proceed", because it misses the double "e".
Use the prefix as a clue: "pre-" suggests "before", while "pro-" suggests "forward".
Answer:D. Proceed