Which of the Following Is the First Noticeable Sign of Puberty

question 64

Multiple Choice

Which of the following is the first noticeable sign of puberty in boys?

• A) Development of pubic hair
• B) Development of acne
• C) Deepening of the voice
• D) Accelerated growth of the testes

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Definitions:

Broad

Having a wide range, scope, or extent; in NMR, a broad signal suggests a diversity of chemical environments or interactions.

Singlet

In NMR spectroscopy, a signal that appears as a single peak, indicating an atom's hydrogen atoms are not coupled to other hydrogen atoms.

NMR

Nuclear magnetic resonance, a spectroscopic technique used to observe local magnetic fields around atomic nuclei, providing detailed information about the structure, dynamics, reaction state, and chemical environment of molecules.

IR

Infrared spectroscopy, a technique used in chemistry to identify compounds and investigate molecular structure by analyzing the vibration of bonds under infrared light.