Question

method of producing offspring in which the young are born alive. they obtain their nourishment from the female and are born in varying states of maturity. this occurs in most mammals.

○ homoparity

○ oviparity

○ ovoviviparity

○ viviparity

Explanation:

To solve this, we analyze each option:

• homoparity: Not a standard term for live birth in mammals.
• oviparity: Refers to egg - laying (e.g., birds, reptiles), not live birth.
• ovoviviparity: Embryos develop in eggs within the mother, then hatch inside or just before birth (e.g., some snakes), not the same as typical mammalian live birth with nourishment from the female.
• viviparity: Defined as the production of live young that receive nourishment from the female (mother) during development, which matches the description of most mammals' reproduction.

Answer:

D. viviparity (assuming the last option is labeled D, with the option text "viviparity")