The main deciding factor whether to use formal or informal language is your

age

audience

experience

grammar

you would not use formal language with

a policeman

your teacher

your little brother

the president

identify the example of informal language.

ryan was a beast in the game.

how do you like your tea, madam?

i experienced an issue yesterday.

billy bob is an exceptional talent.

formal language is used to communicate and acknowledge

kindness

attitude

respect

opinion

1) audience

2) little brother

3) Ryan was a beast in the game

Explanation:

the correct answer is the following.

one of the groups i belong to is the boy scouts. this is a problem-solving group because it has tasks that we need to solve in order to other people in different activities such as the rescue of lost pets, or elder people in need.

the other group i belong to is kids pro environment, and is an information-sharing group that tries to create conscience about the risks and problems that generate pollution in our cities. we share information to other students and parents on the importance of keep our communities clean and our skies clear.