Integrated housing projects may lead to an improvement in attitudes toward racial groups when they provide: a. carefully designed educational programs. b. clear role models for appropriate behavior. c. increased contact without differences in status between groups. d. increased visibility for members of racial groups.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

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

answerthe available supply of sunshine, allows people to grow and sell, (especially oranges);