Final answer:
The corrected sentence is: 'On a beautiful summer day like this, it's hard to decide whether I'd rather go for a bike ride or go swimming.' This revision uses parallel structure and the appropriate conjunction 'whether' for discussing alternatives.
Step-by-step explanation:
The revision that corrects the structure of the sentence 'On a beautiful summer day like this it’s hard to decide if i’d rather take a bike ride or be swimming.' is:
On a beautiful summer day like this, it’s hard to decide whether I’d rather go for a bike ride or go swimming.
This revision corrects the sentence by using parallel structure, which means using the same pattern of words to show that two or more ideas have the same level of importance. In this case, 'go for a bike ride' and 'go swimming' are in parallel form. This revision also replaces 'if' with 'whether,' which is more appropriate when discussing two alternatives. Corrections like these help ensure clarity and coherence in writing.