On a paired-passage part, the most efficient order is usually to:

Read Passage A and answer its questions, read Passage B and answer its questions, then do the comparison questions

A comparison question asking where two authors disagree should be answered:

By drawing on both passages, keeping each author's view attributed

Bubble an answer for every remaining question, since there is no guessing penalty

Start with the passage types you read fastest and bank easy questions, skipping and returning to slow ones

Mark it, put down your best guess, and move on, returning if time allows

Read for the gist and structure, then answer questions by returning to specific lines

A few questions at most, if you contain it

Bubble a best guess for all four so none is left blank

Answer the quick detail questions first, then guess the rest

Because the section is not adaptive, so questions do not change based on performance

Having a bubbled answer for every question

12questions. Pick an answer and you'll see why right away.

On a paired-passage part, the most efficient order is usually to:
A comparison question asking where two authors disagree should be answered:
With about 36 questions in 40 minutes across several parts, a sensible per-part budget (including reading) is about:
With two minutes left and several questions unanswered, the best move is to:
Because the ACT Reading section is NOT adaptive and has no guessing penalty, a smart order of attack is to:
You hit a question that is taking too long. The best move is to:
A dense passage is hard to follow on the first read. The best response is to:
A hard passage should cost you:
With one minute left and four questions unanswered, the single most important action is to:
In the final minute, if some unanswered questions are quick detail questions and others are slow inference questions, you should:
Why can you reorder the parts and questions freely on ACT Reading?
What is the floor that the no-penalty rule sets for every ACT Reading section?