निम्नलिखित में से कौन सा उपकरण विशेष रूप से मूत्र के विशिष्ट गुरुत्व (specific gravity) को निर्धारित करने के लिए डिज़ाइन किया गया है?

Arrange the following clinical stages and symptoms of Hypertension in order of their progressive severity, starting from the initial stage to the culminating severe stage: I. Nosebleeds and palpitations II. Asymptomatic phase III. Severe confusion and vision loss IV. Mild persistent morning headaches Choose the correct answer from the options given below:

The formation of a characteristic 'cobweb' or clot in a Cerebrospinal Fluid (CSF) sample upon standing is a classic diagnostic indication of: