Final answer:
The MC times for DUB to occur are during early adolescence, when girls experience menarche, and during perimenopause, which precedes menopause and marks the end of the reproductive years.
Step-by-step explanation:
The Menstrual Cycle (MC) times for Developmental Biological Updates (DUB) to occur are during early adolescence and perimenopause. The MC represents significant times in the female biological cycle where hormonal changes impact physical and reproductive health. Adolescence includes the onset of puberty when primary and secondary sexual characteristics develop and mature. For example, females experience menarche, the onset of menstrual periods, around the ages of 12-13, which marks the beginning of fertility. Conversely, perimenopause is the period leading up to menopause, marking the end of reproductive years, and typically begins in a woman's 40s or 50s. Therefore, the correct answer is a) Early Adolescence and Perimenopause.