Final answer:
The period of increasing births during 1977-1994 corresponds to the Millennial generation. Millennials came after Generation X and before Generation Z, experiencing a 'baby boomlet' as a surge in birth rates following the original Baby Boom generation.
Step-by-step explanation:
The generational cohort that represents a period of increasing births during the years 1977-1994 is c) Millennials. This generation follows the Baby Boomers, who were born between 1946 and 1964, and precedes Generation Z. The Baby Boomers experienced an increase in births following World War II, which caused a significant rise in the population. The generation after the Boomers, known as Generation X, was born roughly between 1965 and 1980, and is a smaller cohort. The Millennials, also known as Generation Y, came after and reflect another surge in birth rates.
It's worth noting that generational definitions can slightly vary depending on the source, but typically, Millennials are recognized as those born from the early 1980s to the mid-1990s. This generation has been significantly shaped by the rise of the internet and digital technologies. The increase in births from the late 1970s through the 1990s indicates that Millennials experienced what is often referred to as a 'baby boomlet', which is essentially an echo of the earlier Baby Boom generation.