Step 1: Understanding the Concept: 
The question asks to identify the signature artistic technique of Abdul Rehman Chughtai, a prominent modern Indian painter. 
Step 2: Detailed Explanation: 
Abdul Rehman Chughtai was an artist associated with the Bengal School of Art. A defining feature of this school, developed by its founder Abanindranath Tagore, was the wash technique. This technique was inspired by Japanese watercolour methods. It involves applying thin, translucent layers of paint (watercolour) onto the paper and then washing the painting with water. This process is repeated multiple times, building up soft, atmospheric colours and a distinct, ethereal quality. Chughtai became a master of this technique, blending it with the fine, calligraphic lines influenced by Mughal art and Art Nouveau to create his unique style. The other options are incorrect as they are different art forms: bronze casting is for sculpture, impasto is a thick painting technique, and screen printing is a printmaking method. 
Step 3: Final Answer: 
Abdul Rehman Chughtai used the wash technique in his works.
Match List-I with List-II
| List-I | List-II | 
|---|---|
| (A) Plaster of Paris | (IV) Gypsum | 
| (B) Non-ferrous metal | (III) Gold | 
| (C) Cement | (I) Calcium aluminum silicate | 
| (D) Alloy | (II) Bronze | 
Rearrange the following parts to form a meaningful and grammatically correct sentence: 
P. a healthy diet and regular exercise 
Q. are important habits 
R. that help maintain good physical and mental health 
S. especially in today's busy world