Which of the following are warm blooded animals that are oviparous? a. fishes
b. reptiles
c. birds
d. amphibians

Birds

Explanation:

Birds are warm blooded animals that are oviparous.

Info : -

1. Warm blooded animals, such as mammals and birds, were able to maintain their body temperature regardless of the surroundings.

2. Oviparous are the animals which lay eggs

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.