All the options provided contain both a noun phrase and a verb phrase. However, if we are to identify one, option d stands out:
d) You can find frogs and insects by the pond if you look closely enough.
In this sentence, "you" is the noun phrase (subject), and "can find frogs and insects by the pond" is the verb phrase. The phrase "look closely enough" also functions as a subordinate clause.
Each sentence provided does contain both noun and verb phrases, but d is most clear in illustrating this structure.