The correct answer is A) Both Macau and Belize underwent a prolonged process of decolonization.
The process of decolonization in Belize was similar to that in Macau in that both Macau and Belize underwent a prolonged process of decolonization.
Belize suffered many struggles to be an independent nation. Guatemala controlled Belize for many years until Belize got its independence until 1992, formally recognized by Guatemala. One year later, Great Britain withdraws its military troops from Belize.
After many disputes between Portugal and China over Macao, in 1999, Portugal gave Macao to China. So yes, both Macau and Belize underwent a prolonged process of decolonization.