Select the tragedy and the hope of infectious diseases. Nothing can be done to prevent death by infectious diseases, such as proper hygiene and sewage treatment, clean water, and adequate healthcare.
It costs too much money to prevent infectious diseases.
Most of the deaths could have been prevented.
Changes can be made to prevent death by infectious diseases, such as proper hygiene and sewage treatment, clean water, and adequate healthcare.

Then it is june the conclusion to the second sentence is just restating "if it is june then it is summer"

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar  flies (drosophila). one  sample revealed an anomaly: a  white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs)  produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait.