What is a key aspect of the global economy that works against you when trying to save and invest?

Instability in currencies and crude oil

Explanation:

Investing and saving takes a toll on individuals when there in an unstable economy, they may have some property or money and in some moment it losses value. The following are global key aspect of the economy that can affect investment and saving;

-Instability of currencies; for someone whose local currency is far lower than dollars(the general trading currency), they would find it hard to invest most especially if the country imports most of what they use. They could get an item for a particular price in January and in the next week's, their local currency falls, they may not be able to afford that same item they got.

- Crude oil price; due to a large percentage of the world uses crude oil, it's rise and fall in prices affects a lot of people and their investment

answer; (a) calling people who have not shown interest in the product and asking them to buy it;