Option 1 -> (B) "focused on" would not be "drove into" - incorrect matching for sentences B and C.
Option 2 -> (A) "drove into" doesn't fit "wanted to go alone but Arjun ___ coming with me" - wrong phrasal verb for sentence A.
Option 3 -> (A) "insisted on" (demanded firmly), (B) "focused on" (concentrated on), (C) "drove into" (crashed into), (D) "took over" (assumed control of) - all phrasal verbs match their sentences perfectly.
Option 4 -> (A) "took over" doesn't fit the context of someone wanting to come along - incorrect matching for sentence A.
Hence, Option 3: (A) - (II), (B) - (IV), (C) - (I), (D) - (III) -> "insisted on coming" shows determination, "focused on one thing" explains success strategy, "drove into it" describes the collision, and "took over business" indicates succession -> correct