Which of the Following Systems Is the First to Begin

question 53

Multiple Choice

Which of the following systems is the first to begin development in the human embryo?

• A) nervous system
• B) excretory system
• C) reproductive system
• D) skeletal system
• E) endocrine system

---

Definitions:

Random Variable

A Random Variable is a variable whose possible values are numerical outcomes of a random phenomenon.

Normal Curve

A symmetrical, bell-shaped distribution where most occurrences take place around the mean and probabilities for values taper off as they move away from the mean.

Standard Deviation

A statistic that measures the dispersion or variability of a dataset relative to its mean, used to quantify the amount of variation.

Mean

The average of a set of numbers, calculated by dividing the sum of these numbers by their quantity.