An evaluation of one's worth or value that can fluctuate is known as _____

Which of the following statements illustrates an internal preview?

a. "Fourth, you should gently mix in the chocolate chips." b. "Today I will discuss the reasons behind the Defense of Marriage Act, the movement to abolish the Act, and the current state of affairs regarding gay marriage." c. "So, remember to wear safety goggles, work in a well-ventilated area, and dispose of chemicals properly." d. "After thinking about what type of cabinets you would like, you should consider the finish of the wood next." e. "Don't buy coffee at the coffee shop anymore. You can make it much less expensively at home."

How do linguists trace the origins of language?

What will be an ideal response?