Yo tengo treinta cinco años.
The answer would be "Estoy escribiendo" because estan means they are, esta means he is, and estamos means we are, adn we are talking about something in first person and estoy means I am so this perfectly fits it
Hope this helps
Esta situación de hostilidad mutua entre Estados creó a partir de fines del siglo XIX un complejo sistema de alianzas que al final dividió Europa en dos grupos de potencias rivales muy marcados: la Triple Entente, formada en principio por Francia, Gran Bretaña y Rusia
Ramos is a Mexican-American journalist who anchors the Spanish language Univision nightly news, an English language news program, and was named one of Time Magazine’s Most Influential People. Known as “The Walter Cronkite of Latino America,” Ramos left Mexico for America at 24 after the Mexican government censored a critical story he produced, and he became a U.S. citizen in 2008.