Question

1. ____ please choose the sentence where commas are used correctly. a. as the boat turned, about a dozen dolphins began to follow it. b. as the boat, turned about a dozen dolphins began to follow it. c. as the boat turned about a dozen, dolphins, began to follow it. d. as the boat turned about a dozen dolphins began, to follow it. 3. please choose the sentence where commas are used correctly

Explanation:

In option a, the comma is correctly placed after the introductory clause "As the boat turned". In option b, the comma is incorrectly placed within the subject - verb phrase "As the boat turned". In option c, the commas around "dolphins" are unnecessary as "about a dozen" is a modifier of "dolphins" and they are not non - essential elements in this context. In option d, the comma after "began" is incorrect as it disrupts the verb - object relationship "began to follow".

Answer:

a. As the boat turned, about a dozen dolphins began to follow it.