Montego signed up to take part in the science olympiad however he didn't realize that he would actually have to attend practices.

read the sentence and determine which of the answers correctly punctuates the underlined portion of the sentence.

a) olympiad, however

b) olympiad; however,

c) olympiad, however,

eliminate

d) olympiad: however,

The correct choice to select is B) Olympiad; however,

A previous version of this had the incorrect answer.

The correct answer is B. Both A and C are run-on sentences. Using subordinating conjunctions, such as however, therefore, thereby, to combine two complete sentences must use a semicolon at the end of the first complete sentence with a comma after the conjunction. B-Olympiad; however, ...

Another example: I teach grammar; therefore, I know the correct answer. :)

it is an infinitive phrase with a subject.