There's only one way
Explanation:
The duration of short term memory seems to be between 15 and 30 seconds. Items can be kept in short term memory by repeating them verbally (acoustic encoding), a process known as rehearsal.
Answer:

Explanation:
Diana's age is d.
Carol is 3 years younger than half of her sister Diana's age.
Carol's age =
Where d is Diana's age.

Hence, Carol's age is
.
Bob is just a human like us and feels stuff, its probaly due to his environment and pressures/stress but heck who really knows. Bob is Bob. and that is that.
The statement that is likely to occur in the future is new ethnicities will be formed, and old ethnicities will merge into one. The correct option is b.
<h3>What is ethnicity?</h3>
Ethnicity refers to a group's cultural identity, which is generally based on shared ancestry, language, and cultural traditions, whereas race refers to a taxonomic grouping based on physical similarities among groups.
The idea of race refers to the division of humans into groups based on diverse sets of physical features, as well as the process of assigning social significance to those categories.
Ethnicity describes a people's culture in a certain geographic area, encompassing their language, background, religion, and customs.
Therefore, the correct option is b, New ethnicities will be formed, and old ethnicities will merge into one.
To learn more about ethnicity, refer to the link:
brainly.com/question/12084761
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Children learn by using their senses and to adjust their cognitive schemes.