A it’s a plot twist so you won’t know what it is
The answer would be "to help you decipher symbols and scale."
Without the key, a lot of the symbols would be quite confusing and you wouldn't know if it was 5 miles or 500 miles. Everything else is implied throughout the map, but the key's purpose is definitely to help you decipher symbols and scale.
Answer:refers to the learner's ability of using grammatical rules available for that particular langauge, forming correct utterances or pronunciations of the words of that langauge, and knowing how to use these utterances correctly .
Explanation: communicative competence means someone can fluently use words without mixing them up incorrectly or pronouncing inappropriately.
They are able to get the message as clear as possible in words and in a very proper well put langauge construction.
This is what I've come up with
