An object called "house" is related to opportunity, there can be many houses per opportunity. on houses, we have a field named "square feet". we need to show the total of square feet for all houses on each opportunity. what type of relationship should we have?
discuss

a. lookup
b. master detail
c. junction
d. cross object

B. Master detail

Explanation: Master detail is a term used to describe the parent information or data through which a new or customized replicate is developed,it helps in making comparisons. The request shows the houses per opportunity and the square feet which will be the distinguishing factor, The Master detail will contain the square feet of the object called "HOUSE", through the Master detail the opportunities available will be evaluated in order to achieve the customized replicate required.

answer conditional instability;