Question

a customer can do shopping...........online using type of e commerce.​

Answer 1

A customer can do shopping through online using type of e commerce.​

Explanation:

• If a sentence like this arises, we need to check which word we can use and compare with the sentence until we get a clear answer.
• Observing the sentence sharply, they are speaking about the customer doing shopping on online.
• Therefore the apt word to fill is 'through' because it matches with the next words.
• We can also think of using "in", "on". but we need a word that speaks about the path.
• So we are using 'through'.