Question

in 1942, during world war ii, mathematician and actress hedy lamarr offered her expedeveloping frequency - hopping communication. lamarrs patented system would leadcommunications specialist, lamarr would lay the groundwork for modern - day cellphorwhich choice completes the text so that it conforms to the conventions of standard english?a frequency hopping, however:b frequency hopping, however,c frequency hopping. however,d frequency hopping however

Explanation:

• "However" is a conjunctive adverb. When it is used to connect two independent clauses, a period (or a semicolon) is used before it, and a comma is used after it.
• In the given sentence, the first part "Lamarr's patented system would lead..." and the second part "as a communications specialist, Lamarr would lay the groundwork..." are two independent clauses. So we need a period before "However" and a comma after it.

Answer:

C. frequency hopping. However,