बॉडी मास इंडेक्स (BMI) की गणना के लिए निम्नलिखित में से कौन से मापदंड आवश्यक हैं? (a) सेंटीमीटर में ऊंचाई (b) किलोग्राम में वजन (c) मीटर में ऊंचाई (d) शरीर का वसा प्रतिशत (Body Fat %) (e) पाउंड में वजन नीचे दिए गए विकल्पों में से सही विकल्प का चयन कीजिए:

Which of the following statements are correct regarding the clinical sub-classifications of Obesity based on fat distribution? I. Central obesity is characterized by fat accumulation around the abdomen and is commonly described as 'apple-shaped'. II. Peripheral obesity involves fat distributed around the hips and thighs and is typically referred to as 'pear-shaped'. III. Central obesity is associated with a lower risk of metabolic diseases due to its specific fat distribution pattern. IV. Peripheral obesity is primarily identified by fat accumulation around the abdomen and carries a high metabolic risk. Choose the correct answer from the options given below:

Consider the following statements regarding dental caries: 1. Dental caries or tooth decay begins when bacteria acting on sugars produce alcohol that softens or demineralises the enamel. 2. Dental caries or tooth decay begins when bacteria acting on sugars produce acetone that softens or demineralises the enamel. 3. Dental caries or tooth decay begins when bacteria acting on sugars produce acids that soften or demineralise the enamel. How many of the statements given above are correct?