C. Sequential order is used to present the events in the order they occur.
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Every frugal shopper counts his or her coupons before he or she shops.
Shopper is singular so your pronoun has to be singular as well.
Answer:
The answer to this is an infinitive and a gerund.
Explanation:
The phrase "to learn" is in infinitive from and the word "flying" is a gerund because it has the verb "fly" and the ending -ing.