Recent productivity acceleration has been

multiple choice $2$

positively influenced by economies of scale because for firms selling digital or information products expanding production has a very low marginal cost.

negatively influenced by economies of scale because modern firms selling digital or information products have high start$-$up costs.

positively influenced by economies of scale driven by digital or information based products because it has enabled us to encourage mergers.

negatively influenced by economies of scale because the digital nature of modern business now requires costly security to protect information systems.