Answer:
Option A
Explanation:
The displacement in simple term can be defined as the difference between the final and initial position of an object. However, distance is the total length of the movement.
For example - If an object move from point A to B which is a distance of 100 meters, then returns back to point A, and then the total distance traveled is equal to 200 meters while the displacement is zero.
Of all the given options, the distance and displacement is same for option A as the object travels from one to other and stops their only.
Hence, option A is correct
Influence of environment:<span> Environment can play several roles in influencing the expression of some genes. In hip dysplasia, for instance, environment can influence how dysplastic a dog becomes. A dog cannot become dysplastic unless it has a majority of "bad" hip genes. However, when a dog does have a majority of bad genes, and it is kept overweight or allowed to grow too fast, or is exercised too much or too little, that dog will end up with a worse case of hip dysplasia than it otherwise would have had.</span>
A for the first one and D for the second
<span>Pernicious anemia is a condition caused by too little vitamin B12 in the body. It is one form of vitamin B12 deficiency anemia. Vitamin B12 helps the body make healthy red blood cells and helps keep nerve cells healthy. It is found in animal foods, including meat, fish, eggs, milk, and other dairy products.</span>
A genetic mutation. It's known as malformation. It can be caused by a trisomy in one of the alleles, or an affected gene.