Assist the lead researcher in writing the methodology section of her paper by dragging the best adverbs into the text.

The initial phase of our sleep experiment was heavily reliant on volunteer participation. To protect privacy, access to the confidential data was strictly limited to the lead investigators.

The initial phase of our sleep experiment was heavily reliant on volunteer participation.

"Heavily reliant" is a strong collocation meaning "depending a lot on someone or something." We don't say "strictly reliant" or "deeply reliant."

To protect privacy, access to the confidential data was strictly limited to the lead investigators.

"Strictly limited" (or strictly prohibited) is commonly used in formal and academic contexts to indicate that rules are tightly enforced.