Smart mobs rely on decentralized autonomy. Each node acts independently based on simple local rules, yet it can coordinate with nearby nodes to move toward a shared goal. This micro-coordination—small, local interactions that align with the overall objective—produces organized, emergent behavior without a central controller. Descriptions that imply a single leader or no coordination don’t fit how smart mobs operate, nor would a strict central command produce the flexible, scalable coordination observed in these systems. So the best description is that each node is autonomous but capable of micro-coordinating its movements with other nodes for a specific end.

Lifting a box to a fixed height requires work equal to the gravitational force you must overcome times the distance moved: W = m g h. For a given box (mass m) and height (h), if gravity (g) becomes stronger, the force you need to apply increases, so the work increases in direct proportion to g. Therefore more work is required to lift the box to the same height when gravity is stronger. This matches the choice that says yes. The other options don’t fit because, with mass and height fixed, changing gravity changes the required work; there’s no need to invoke other factors or claim insufficient information in this ideal scenario.

SI base units are the fundamental building blocks from which all other units are derived. They include meter for length, kilogram for mass, second for time, ampere for electric current, kelvin for temperature, mole for amount of substance, and candela for luminous intensity. A volt is a derived unit used to measure electric potential difference. It can be written in terms of base units as 1 volt = 1 joule per coulomb = (kg·m^2·s^-2) / (A·s) = kg·m^2·s^-3·A^-1. Because it is formed from multiple base units, it is not a base unit.

Pattern of gamete production: oogenesis has long interruptions, while spermatogenesis is essentially continuous. In females, oocytes begin development before birth and enter meiosis but are paused in prophase I for years, only resuming periodically during the reproductive years and then arresting again at metaphase II until fertilization. This creates long gaps between the formation of usable eggs. In contrast, males produce sperm after puberty in a steady, ongoing process with spermatogonia continually renewing and advancing through meiosis and maturation, yielding a constant supply of sperm over a person’s reproductive life. That contrast—long pauses in the female process versus continual production in the male process—best matches the statement. The other ideas don’t align with this pattern: the notion that eggs are produced continuously, or that sperm development happens in bursts, or that spermatogenesis starts only in adolescence, doesn’t reflect the continuous nature of male production or the paused, cyclical nature of female development.