Imperfect multicollinearity
a. implies it will be difficult to estimate precisely one or more of the partial effects using the data at hand
b. violates one of the four Least Squares assumptions in the multiple regression model
c. means that you cannot estimate the effect of at least one of the Xs on Y
d. suggests a standard spreadsheet program does not have enough power to estimate the model

Some disadvantages to leasing a car is that you are counting on someone to give you money every week or month depending on what you decided and if they don't have all of it well what if you needed that money now you as well have to pay not in full. a disadvantages to purchasing a new vehicle is if it is used then not all the time will absolutely everything work. its almost like a trail and era. although if it is a new car they will try to though all these specials and deals at you in your lease and it can be very overwhelming if you are not use to it.   

An industry is a particular form or branch of economic or commercial activity.

Answer(d)none of the above choices;