The correct answer is option (C):
poke
The correct answer is "poke". The question likely presents a word association or analogy problem. In this type of question, you are trying to find a word from the options that has a similar meaning or a related concept to the given word.
PROD, in its most common usage, means to jab or poke someone or something with a pointed object. Therefore, the word "poke" directly mirrors the action implied by "PROD". The other options, "secure", "endow", and "growl" have meanings that are not closely related to the action of PROD. "Secure" means to make safe or protect. "Endow" means to provide with a quality, ability, or asset. "Growl" is a low, guttural sound often made by animals. Therefore, the best answer based on the given options is "poke" because it shares the closest semantic relationship with "PROD".