Read the following article and select the best answer. Article: What if our babies could somehow tell us what they're thinking about, what they want, and what makes them unhappy? Robyn Holt, researcher for Baby Talk New Zealand, says they can. Holt heard about baby sign language through an advertisement and decided to go along to a workshop . "Sign language is something that's always interested me, and I thought, it could be really cool to try this with a baby because we are always guessing all the time what they actually want." Holt started using baby sign language with her baby son Benjamin, now 12, and within two weeks he started to sign the sign for milk. She has since used it with her two younger sons Dominic, 8, and Matthew, 3. Baby sign language is nothing new: the practice (which is based on adult sign language) has been out in America for more than 30 years. But it is enjoying a rebirth in New Zealand. The idea behind baby sign language is that babies do have the ability to communicate their needs if they are given the right tools to do so. Although many mothers develop an intuition about whether their baby's crying is from hunger, tiredness, or pain, baby sign language creates a direct form of communication that unlocks _ . When babies are between 6-months and 12 to 13-months, parents can begin to teach them sign language: use the sign for milk while feeding, and also talk about milk, so that the child begins to make the link in their brain. Then they can begin to add other signs, i.e. food, sick or pain. "I know of one parent. Her child was signing the sign for hurt by his mouth, and she realised his first teeth were growing. It makes life so much easier," said Holt. Question: Why did Holt go to the baby sign language workshop? - To entertain her own children. - To better understand babies' needs. - To help babies with language problems. - To develop a new system of sign language.
Answer:
To better understand babies' needs.