Why do some people worry that eating genetically modified food may be harmful?

a. altering the dna of plants always reduces the nutritional content.
b. genetic modification reduces the genetic variation in both plants and animals.

c. there have not been enough long-term studies to prove that this food is safe.
d. there have been many studies showing that these foods cause disease.

The correct answer is A altering the DNA of plants always reduces the nutritional content .

Explanation:

Recombinant DNA technology is the heart of applied molecular biology.This technology is used to produce genetically modified nplants,animals,proteins etc.

   During production of genetically modified plant or transgenic plant the foreign gene that is introduced into the plant by a suitable vector forces the plant to produce more crop within a short period of time.As a result the nutrition quality of the genetically engineered crop is very low than that of normal crop.

b.

c. establishing proper sleep hygiene