Answer:
When I go shopping, I want to buy running shoes, a red shirt and blue shorts
Explanation:
Parallel structure means using the same pattern of words to show that two or more ideas have the same level of importance. This can happen at the word, phrase, or clause level.
The usual way to join parallel structures is with the use of coordinating conjunctions such as "and" or "or."
Given sentence is
When I go shopping, I want to buy running shoes, a shirt that is red, and blue shorts.
We see the first phrase running shoes is of format adjective + noun (running here is used as an adjective)
whereas the phrases for the shirt and shorts are in a different format
To get parallel structure change the sentence as follows;
When I go shopping, I want to buy running shoes, a red shirt and blue shorts
