Question

fix any punctuation or capitalization errors below. click \submit answer\ if there are none.
it took black widow four hours to plan an elaborate trick on her cousin. she didnt count on getting caught just before pulling it off however.

Explanation:

The issue is with the transition word "however" at the end of the second sentence. When connecting two related independent clauses with "however", we need to use a semicolon before "however" and a comma after it, or use a period and start a new sentence. The correct adjustment is to replace the period after "cousin" with a semicolon, add a comma after "however".

Answer:

It took Black Widow four hours to plan an elaborate trick on her cousin; she didn't count on getting caught just before pulling it off, however.