Brian is a healthy young man. he has been training with his teammates for a 50-yard dash for months. however, even with practice, he cannot run fast enough to qualify. what is the most likely reason that brian can't qualify? 1. he is not eating the correct serving size of food during his meals. 2. he does not have a well-defined goal or self-monitoring habits. 3. his genetics are influencing some of his skill-related fitness components. 4. his teammates are not providing enough support.

A41-year-old man comes to the clinic complaining of a chronic cough over the past 4 months, which has now been accompanied by haemoptysis. he denies smoking or any past medical history. on physical examination, his head and neck examination is normal. his lungs have diffuse bilateral rales. cardiac examination is normal. laboratory findings reveal na 142 meq/l, k 4.2 meq/l, cl 110 meq/l, hco3 24 meq/l, bun (blood urea nitrogen) 39 mg/dl, creatinine 2.9 mg/dl. urinalysis reveals microscopic haematuria and 4+ proteinuria. which of the following serologic blood tests would most confirm the suspected diagnosis? - anti-glomerular basement membrane antibodies- anti-mitochondrial antibodies- anti-neutrophilic antibodies- anti-parietal cell antibodies- anti-smooth muscle antibodies