Final answer:
The weight range of a newborn guinea pig is approximately 60 to 120 grams, so the closest answer to the question is 100-150 grams.
Step-by-step explanation:
The weight range of a newborn guinea pig is typically between 60 to 120 grams, which is not precisely reflected in the options provided. However, based on the question's choices, the closest answer would be 100-150 grams (Option b).
It is important to note that like human babies, guinea pig pups may experience a slight weight loss during their first week after birth. This is normal and is due to the resorption and urination of the fluids in their bodies. As they begin to eat and adjust to their surroundings, they will start gaining weight.
In general, a healthy guinea pig pup should steadily grow as it receives proper nourishment from its mother and eventually from solid foods, gaining weight each day after the initial post-birth weight loss.