Calf : Kid : Pup — Choose the option that belongs to the same category of juvenile/young ones as the given trio.

Introduction / Context:
'Calf', 'kid', and 'pup' are names for the young ones of specific animals (cow, goat, dog). The task is to identify an option that is also a commonly used term for a juvenile stage of a species.

Given Data / Assumptions:

• We are matching a label for a young organism.
• Options include generic terms and life stages of non-mammals.
• We must preserve the 'young one' labeling concept.

Concept / Approach:
'Infant' is the term for a human baby, matching the pattern of naming young individuals. 'Young' is vague; 'Larva' is a developmental stage of many insects/amphibians but is not parallel in everyday taxonomy to the mammalian labels given; 'Animal' denotes a kingdom-level organism and is not a juvenile label.

Step-by-Step Solution:
1) Identify the semantic class: terms naming young individuals.2) Select the option that is exactly a juvenile label.3) 'Infant' fits; others either are generic or mismatched.

Verification / Alternative check:
Common usage: infant (human), calf (cow), kid (goat), pup (dog) are parallel in function.

Why Other Options Are Wrong:

• Young: Adjective/state, not a specific label.
• Larva: Non-mammalian life stage; conceptually different labeling schema.
• Animal: Overbroad category; not a juvenile term.
• None of these: Incorrect because 'Infant' is correct.

Common Pitfalls:
Equating precise juvenile labels with generic descriptors. Stick to named young-stage terms.

Final Answer:
Infant