the manager reviewed the proposal she approved it after discussing some minor modifications. (i) and (ii) in addition to (iii) likewise

Explanation

The most appropriate connector to combine the sentences into a coherent and grammatically correct sentence is "and." Explanation: • "And" connects two actions that are sequentially related in the sentence: first, the manager reviewed the proposal, and then she approved it after discussing some minor modifications. • "In addition to" and "likewise" are not suitable as they suggest an additive or comparative relationship, which is not the intended context here. Thus, the correct answer is: (a) only (i) The sentence would read: The manager reviewed the proposal, and she approved it after discussing some minor modifications. Summary: • and adds two related actions, making it the correct connector. • in addition to adds separate points, which doesn't apply. • likewise compares similar actions, but these actions aren't comparable, they're sequential.