The phrase "a primary choice" is correct and usable in written English.
It can be used when referring to the main or most important option among several alternatives.
Example: "When considering the best approach to the project, we found that a primary choice was to focus on sustainability."
Alternatives: "a main option" or "a key selection".
Si{110} wafer is a primary choice when the microstructures with vertical sidewalls formed by {111} planes are fabricated using wet anisotropic etching [28 34, 52].
"Our record-setting mobile sales affirm that mobile has clearly transitioned from just an alternative way to buy tickets to a primary choice for many weekend moviegoers," said executive vice president and general manager Rick Butler in a press release.
PSI-BLAST is in many instances a primary choice for homology detection.
Radiotherapy, although not a primary choice for treatment, is frequently applied for local control in patients for whom surgical resection with sufficient margins is not achievable [ 3, 4].
While no clear consensus has been established, the BMI method (i.e. the use of BMI growth curves) is starting to emerge as a primary choice among researchers for HBW calculations in clinical and non-clinical children and adolescents [ 4, 12].
The role of early adequate antibacterial (AB) therapy in reducing mortality of serious infections in adult intensive care setting has been well recognised [ 1] and has led to implementation of broad spectrum agents as a primary choice in high risk situations.
Once you have a handle on those you'll want to start messing around with some front-end frameworks like Ember, Angular, etc... Regarding back-end languages, you have a few primary choices.
Uncalibrated pulse pressure analysis devices may be the primary choice in a perioperative setting as they provide functional hemo-dynamic variables and thus allow comprehensive hemo-dynamic management.
In clinical practice, the transplantation of an autologous vessel is the primary choice; however, almost 40% of patients lack autologous vessels of an adequate quality.
If the woman has a phone and is willing to receive a phone call, this will be the primary choice of follow-up.
Morrison is one of the first American authors to use magical realism as a primary stylistic choice".
