In the following questions, sentences are given with a

Solution

(a) to focus on reducing operational costs and to expand into new markets. Incorrect. It creates a parallelism error by mixing "to focus" and "to expand" with "reducing." Also, the "to focus on" part of the phrase changes the meaning and is less idiomatic in this context. (b) focused on reducing operational costs and expanding into new markets. Incorrect. "focused" is in the past tense, which doesn't align with the present tense "strategic plan that focuses." (c) that will focus on reducing operational costs and expanding into new markets. Incorrect. The use of "will focus" shifts the tense from present ("focuses") to future, creating inconsistency with the rest of the sentence. (d) that focuses on reducing operational costs and expanding into new markets. Correct. This option maintains the correct present tense and fixes the parallelism error by using two gerunds ("reducing" and "expanding") after "focuses on," creating a grammatically sound and parallel structure. (e) No improvement is required. Incorrect. The original sentence has a parallelism error by mixing a gerund ("reducing") with an infinitive ("to expand").