The phrase "able to manipulate their" is correct and usable in written English.
It can be used when discussing someone's capability to control or influence something, often in a technical or psychological context.
Example: "The software is designed to be able to manipulate their data efficiently for better analysis."
Alternatives: "capable of controlling their" or "able to handle their".
How are schools able to manipulate their intake in such a manner?
"Being able to manipulate their environment gave these very young children a kickstart to learning.
Yes, they would still be able to manipulate their legions into endorsing cruel and self-defeating policies.
Ronald F. Pollack, executive director of Families USA, a consumer group, said: "Association health plans will be able to manipulate their benefit packages to attract healthier people and discourage sicker people from joining.
Dr Repasky explains that, unlike mice kept in cages, most humans are able to manipulate their environment by putting on extra clothes or turning up the heating, so should not experience chronic cold stress.
Because the Yankees have a day off tomorrow, they will be able to manipulate their rotation and provide as many as two extra days for Pettitte to rest his leg; it could be that the Yankees will start Mike Mussina, Pettitte and Ted Lilly at Shea Stadium next weekend.
The US Federal Government is compromised to such a degree, that big business is almost effortlessly able to manipulate it for their own aims.
For many years, the Opec cartel was able to manipulate prices through their grip on supply - however, many forecasts now suggest that in Europe the price of Brent crude may soon fall below $100 a barrel.
And when a same-sex couple files for straight bankruptcy, they will have to follow the same rules on electing exclusions that opposite-sex couples do, instead of being able to manipulate the process to their advantage and to their disadvantage of their creditors.
Although the Mysterons are able to manipulate events from Mars, their actions on Earth are usually performed by their replicated intermediaries.
Dominant peasants, members of a rural elite, were able to manipulate the system to their advantage.
