Answer:
None of these.
Step-by-step explanation:
A complete predicate is the part of a sentence that contains the verb and everything that is not the subject. This means that the phrase that starts from the verb to the very end, including the modifying phrases that complete the sentence, is the complete predicate.
A complete predicate is different from a predicate in that a predicate just includes the verb and the statement about the subject while a complete predicate will include everything from the verb to the modifying clause or phrase that follows it.
In the given sentence, the subject is "Lindsay" while the verb is "enjoys". So, the complete predicate will be "enjoys surfing but isn't very good", which is not given in the options.
So, the correct answer is "none of these".