The relationship between RENT and LEASE is that they are related terms in the context of temporary use of property — “rent” is the act/payment, while “lease” is the contract/arrangement for that use.
Option (A) — interest : borrow — is similar; “borrow” is the act and “interest” is the cost/condition attached to it.
Option (C) — price : buy — follows a similar relationship: “price” is the condition/cost, “buy” is the act.
Option (D) — tax : govern — also fits; “tax” is a financial condition/requirement linked with the act of “govern” (administration).
Option (B) — salary : employ — is different; “salary” is a payment to an employee, while “employ” is to hire someone. The relationship here is employer-to-employee, not condition-to-act like RENT : LEASE.
Therefore, (B) does not fit.