Match each scenario to the function advertising serves.

Scenario $1$: Carrie Babi, who is a new mother, is trying to determine which baby food is best. She sees an advertisement for a new line of organic baby food produced by Baby Food B$\text{'}$ Us$,$ which is recommended by $4$ out of $5$ pediatricians. Carrie Babi figures this would be a good choice of baby food, since it is organic and recommended by pediatricians, and this helps her to decide which baby food to buy.

Scenario $2$: Baby Food B$\text{'}$ Us knows that word of mouth is extremely important, so it has spent millions of dollars building brand name recognition for itself, but it also knows that it needs to keep up high production standards since word of mouth can also ruin a reputation.

Scenario $3$: Even though both Baby Food B$\text{'}$ Us and Food for Babies B$\text{'}$ Us make organic baby food, Baby Food B Us has been able to obtain the dominant share of the market by convincing consumers that its product is distinct from its competition through advertising.

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