Harshit runs a well-known departmental Store in Delhi . He procures different kinds of products from all over the country through railway, road ways ,and Airways. He also own a go down to hold the stock . He has also taken an insurance policy worth rupees 10 crore for his business moreover he has taken a loan of rupees 200000 from ICICI Bank in order to meet short-term financial need of his business. He has placed information about his store on the hoarding billboards etc in order to popularize them. In context of the above case:

a) what are auxiliaries to trade?
b) Identify the different auxiliaries to trade that are being used by Harshit in his business by quoting lines from the paragraph.​