Which one of the alternative is most effective in helping students expand their English...

✂️ a) Studying word lists out of context.

✂️ b) Using flashcards without examples.

✂️ c) Learning new words through contextualized readings and using them in sentences.

✂️ d) Translating words from English to Portuguese repeatedly.

✂️ e) Memorizing synonyms without context.

Responda: Which one of the alternative is most effective in helping students expand their English vocabulary?