Question

sustain has the same or almost the same meaning as: detain pertain abstain maintain

Explanation:

"Sustain" means to keep something going or to support and maintain it. "Maintain" also means to keep something in existence or in good condition, to continue or preserve. "Detain" means to keep someone in custody or to delay. "Pertain" means to be related to or relevant to. "Abstain" means to refrain from doing something, especially from voting or from consuming something like alcohol.

Answer:

D. maintain