Sinjon is fluent in both english and french because his parents spoke both languages to him when he was a very young child. as a result, sinjon has an amazing capacity to inhibit his attention to irrelevant information. linguists would suggest that his ability to focus may be caused by a bilingual advantage resulting from:

The correct answer is that Sinjon has an increase in word power.

Based on the given situation, Sinjon is able to speak in two languages because of his parents, it gives him the advantage to have an effective word power. Word power refers to the extensiveness of one's vocabulary, it may also help you in expressing yourself to others.