A price range at which technicians would expect a substantial increase in the demand for a stock is called

Support level.

Explanation:

A support level is the price level at which an asset would not fall beneath for an amount of time.The support level is formed by buyers going into the market anytime the asset falls down to a lower price. We can do a chart of the support level by drawing a line along the lowest level for that time period in consideration

answer; tech (a) is correct;

answer; /// the above statement is (false);