Yuna Is Talking to Her Three-Month Old Grandson

question 161

Multiple Choice

Yuna is talking to her three-month old grandson.She is using a much slower paced speech than what she would use with another adult,and she is also using much more inflection and high-pitched sounds.Why is Yuna speaking this way?

• A) Without more information we can only assume that she always speaks like this.
• B) She has heard that babies hear high frequency sounds better than low frequency sounds.
• C) She is using child-directed speech.
• D) She doesn't want her grandson to grow up talking too quickly or low-pitched.

---

Definitions:

Powers

The result of raising a base number to the exponent specified, indicating how many times the base is multiplied by itself.

Five-Figure Accuracy

A measurement precision where values are accurate up to five digits.

Solve For X

A common mathematical problem-solving phrase that involves finding the value of the variable 'x' that satisfies a given equation.

Solve For X

"Solve for X" is an instruction in mathematics to find the value of the variable X that satisfies a given equation.