<span>Whether you are trying to lose weight, gain weight or maintain your weight is one factor that affects how many calories you should consume. Other factors involved include your basal metabolic rate, activity level and stage in life, as growing children and pregnant and lactating women have higher caloric needs. Changes in your weight can be an indicator of whether you are consuming the appropriate amount of calories.</span>
1 - sentence
2 - copy and paste
3 - make spelling error
Explanation : In order to write a research paper, the objectives of writing it should be very clear. We should not write irrelevant sentences that don not relate with the aim of the paper. While writing the paper in our own words, we should ensure not to copy and paste from other journals and keep the grammar right. The sentences should be well phrased and we should get our paper checked by someone for the purpose of proofreading.
A.
Explain.
Or it could b c but A is stronger
OK so basically the location of the sinoatrial node will be in the right atrium