Which sentence correctly uses the semicolon? a. it was already late in the evening; and i wanted to go to bed
b. it had been a most unpleasant coincidence that the power outage had come when we had guests staying over; the entire house was full
c. still, most of our guests had been understanding about it; so there was, for the most part, good humor all around.
d. we had it worse than everyone on the first floor, all the windows in all the upstairs rooms were tinted; and there wasn’t enough moonlight in the first place.

B.

Explanation: You don't place a semicolon before coordinating conjunctions like "and", "but" or "so." Sentences A and D would be correct without the semicolon, and in sentence C, we should replace it with a comma (which is also an acceptable solution in sentences A and D). Sentence B successfully links two independent clauses that are so related semantically that it's best for them to be in the same sentence.

i think the life is invaluable.

you can also say immeasurable.

the second sentence is a great revision in my opinion. that would be a great topic.

explanation: