On 18 January 2014, the interim government successfully institutionalised a more secular constitution. The president is elected to a four-year term and may serve 2 terms. The parliament may impeach the president. Under the constitution, there is a guarantee of gender equality and absolute freedom of thought. The military retains the ability to appoint the national Minister of Defence for the next 8 years. Under the constitution, political parties may not be based on "religion, race, gender or geography".
what may not be basis for political party? (If the question is unanswerable, say "unanswerable")
religion, race, gender or geography