The phrase "all necessary options" is correct and usable in written English.
It can be used when referring to a complete set of choices or alternatives that are required for a particular situation or decision.
Example: "Please ensure that you have selected all necessary options before submitting your application."
Alternatives: "all required choices" or "all essential options".
The summit statement said EU leaders would "examine all necessary options" to protect civilians.
"All necessary options is strong language," he said, referring to the formula agreed for the joint statement.
Some diplomats hope that by talking of "all necessary options" they can deter further attacks by Colonel Qaddafi.
In order to protect the civilian population, member states will examine all necessary options, provided there is demonstrable need, a clear legal basis and support from the region".
Of course they did: it hovers brooding and baleful over every Pentagon and EU planning table as the empty talk of "all necessary options" trundles along.
BRUSSELS — European leaders on Friday agreed to examine "all necessary options" — including armed intervention — to protect civilians should the Libyan leader, Col. Muammar el-Qaddafi, escalate attacks on rebel-held territories.
He's also a necessary option, given that the first choice midfield partner for Bradley, Jermaine Jones, is prone to yellow cards.
As long ago as the 1970s, Egyptian leaders declared that dwindling oil reserves would make nuclear power a necessary option.
Mr. Chen said that law enforcement authorities insisted that residential detention was a necessary option because the police needed more time to investigate certain cases.
Questioned by Justice O'Connor about why the law lacked an exception for a woman's health, Mr. Stenberg said that a D and X abortion was never a necessary option "because D and E remains available".
John Santa, an internist and director of the organization's Health Ratings Center, said that haggling is a necessary option these days, as consumers pay more for health care through higher deductibles.
