Change this following passive voice into active voice.. laxmi is loved by her parents.

The parents love laxmi, if this many words taken out for the active voice isn't sustainable, and you only need to know how to do an active voice...it's simply the passive voice in reverse. So for an active voice it would be the doer of the action, followed by the action, to the receiver of the action  

faulty parallelism is a construction in which two or more parts of a sentence are equivalent in meaning but not grammatically similar in form.

the correct version of this faulty parallelism in the sentence is:

the hikers knew that the hike was six miles, that it usually required the entire day, and it would not be wise to start after 10: 00 a.m.

the problem is the last sentence, the first two have a basic subject+verb+object structure.

so, to give a proper balance to the structure, or better said, to give a parallel structure, we must write a basic s+v+o structure in all three sentences:

the hikers knew that the hike was six miles, that it usually required the entire day, and it would not be wise to start after 10: 00 a.m.

my guy how are we supposed to know