The hourglass model for structuring effective business presentations suggests you should:.

Begin and end your presentation with motivating context

Explanation:

Just as the hourglass is shaped with a large top, narrow middle and a large bottom. Presentations should start on a general and motivational context.

The middle of the presentation should focus on some details and procedures on how to achieve set goals and objectives of the topic. This is where practical steps are given to the audience.

The end of the presentation should again be a motivational context again. The audience is made to see the big picture of the situation.

answer(b) equal; set period;

credit history is used by lenders to determine whether you are a 'risky' person to give their money to.

having a short history provide very little data for the lenders. they wouldn't be able to determine your credit behavior from such a small samples. even if they are perfect.

having long credit history with few blemishes provide larger and more accurate data for the lenders to predict your credit behavior.