Which of the following correctly describes reproduction in turtles?
a. adults expend a lot of energy to care for offspring.
b. they lay their eggs in water to reduce water loss.
c. they mature rapidly to maximize reproduction opportunities.
d. offspring sex ratio may be determined by temperature.

The answer is D, but b could possibly be an answer too.

Explanation:

Turtle offspring sex ratio can be determined by the temperature. The temperature of the growing eggs is what decides the offspring's gender. This is called temperature-dependent sex determination, or TSD.

It could be B because some turtles do lay their eggs in underwater, but I don't think that they lay them underwater to reduce water loss.

i have to report this, it doesn't relate to biology

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.