Decision support systems .might support a decision maker in only one or two of the problem-solving phases support optimization, b.satisficing, c.and heuristic approaches all of the above although skewed toward the top levels of management, d.can be used at all levels.

all of the above

Explanation:

Decision support systems is a computer system that uses information systems. The main objective of this program is to assist in organizational decision making. To be enabled for this function, the system operates using a large amount of data, which converts information and compiles the most relevant information to provide existing alternatives that assist the effective decision making process.

answer; be sure that the information on file is correct;

answer; ///blank(1) longer; blank(2); lessi believe this is correct, plz check first; good luck';