Answer:
Spring floor
Explanation:
Javelin, shot put, and discus are all separate sports/competitions that are not related to gymnastics. Spring floor is an activity where the floor absorbs shock, which makes it feel bouncy and soft, which makes a floor routine much easier and safer.
Photosythesistransforms solar energy into the chemical energy of a carbohydrateStomatacarbon dioxide in the air anters the many spaces of mesophyll tissue through small openingscholoroplastsorganelles that carry on photosynthesisstromaa double membrane surrounds a fluidthykaloidsthird membrane system within the stroma forms flattened sacsgranain some places are stacked
An author's credentials can determine a health source's credibility. None of the other options would apply to credibility. When it comes to health, if you want to make sure that what you are researching or reading is authentic and reliable you need to find out whether the author is a professional health expert or not. You can do this by finding out their credentials.
D would make the most money, but it's up to you! :)
