What do the ruins of Harappa and Mohenjo-daro tell us about the Harappan civilization? Choose three answers.

The cities were destroyed by invaders.

The cities had advanced construction methods.

Harappa could not grow many crops due to the climate.

The cities were well organized and used a grid system for streets.

The cities had advanced water-management systems.

Harappa and Mohenjo-daro competed against each other in sports.